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Finding the Fourth Proportional to 516.57, 772.92 and 307.58

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Solution

The fourth proportional to 516.57, 772.92 and 307.58 is: 460.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.57 : 772.92 = 307.58 : x
  2. Step 2: Convert to fraction form
    516.57/772.92 = 307.58/x
  3. Step 3: Cross multiply
    516.57x = 772.92 × 307.58
  4. Step 4: Simplify right side
    516.57x = 237,732.02
  5. Step 5: Solve for x
    x = 237,732.02/516.57
  6. Step 6: Final answer
    x = 460.21

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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.