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Finding the Fourth Proportional to 537.78, 807.36 and 457.14

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Solution

The fourth proportional to 537.78, 807.36 and 457.14 is: 686.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.78 : 807.36 = 457.14 : x
  2. Step 2: Convert to fraction form
    537.78/807.36 = 457.14/x
  3. Step 3: Cross multiply
    537.78x = 807.36 × 457.14
  4. Step 4: Simplify right side
    537.78x = 369,076.55
  5. Step 5: Solve for x
    x = 369,076.55/537.78
  6. Step 6: Final answer
    x = 686.30

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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.