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Finding the Fourth Proportional to 731.92, 1,010.05 and 400.35

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Solution

The fourth proportional to 731.92, 1,010.05 and 400.35 is: 552.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    731.92 : 1,010.05 = 400.35 : x
  2. Step 2: Convert to fraction form
    731.92/1,010.05 = 400.35/x
  3. Step 3: Cross multiply
    731.92x = 1,010.05 × 400.35
  4. Step 4: Simplify right side
    731.92x = 404,371.99
  5. Step 5: Solve for x
    x = 404,371.99/731.92
  6. Step 6: Final answer
    x = 552.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.