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Finding the Fourth Proportional to 730.49, 1,095.66 and 243.41

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Solution

The fourth proportional to 730.49, 1,095.66 and 243.41 is: 365.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.49 : 1,095.66 = 243.41 : x
  2. Step 2: Convert to fraction form
    730.49/1,095.66 = 243.41/x
  3. Step 3: Cross multiply
    730.49x = 1,095.66 × 243.41
  4. Step 4: Simplify right side
    730.49x = 266,689.12
  5. Step 5: Solve for x
    x = 266,689.12/730.49
  6. Step 6: Final answer
    x = 365.09

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Find fourth proportional to 365.24, 547.83 and 121.70
Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.