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Finding the Fourth Proportional to 747.88, 1,031.96 and 416.31

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Solution

The fourth proportional to 747.88, 1,031.96 and 416.31 is: 574.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    747.88 : 1,031.96 = 416.31 : x
  2. Step 2: Convert to fraction form
    747.88/1,031.96 = 416.31/x
  3. Step 3: Cross multiply
    747.88x = 1,031.96 × 416.31
  4. Step 4: Simplify right side
    747.88x = 429,610.10
  5. Step 5: Solve for x
    x = 429,610.10/747.88
  6. Step 6: Final answer
    x = 574.43

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