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Finding the Fourth Proportional to 730.20, 1,095.41 and 243.19

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Solution

The fourth proportional to 730.20, 1,095.41 and 243.19 is: 364.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.20 : 1,095.41 = 243.19 : x
  2. Step 2: Convert to fraction form
    730.20/1,095.41 = 243.19/x
  3. Step 3: Cross multiply
    730.20x = 1,095.41 × 243.19
  4. Step 4: Simplify right side
    730.20x = 266,392.76
  5. Step 5: Solve for x
    x = 266,392.76/730.20
  6. Step 6: Final answer
    x = 364.82

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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.