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Finding the Fourth Proportional to 730.48, 1,095.90 and 243.52

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Solution

The fourth proportional to 730.48, 1,095.90 and 243.52 is: 365.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.48 : 1,095.90 = 243.52 : x
  2. Step 2: Convert to fraction form
    730.48/1,095.90 = 243.52/x
  3. Step 3: Cross multiply
    730.48x = 1,095.90 × 243.52
  4. Step 4: Simplify right side
    730.48x = 266,873.57
  5. Step 5: Solve for x
    x = 266,873.57/730.48
  6. Step 6: Final answer
    x = 365.34

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Double scale
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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.