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Finding the Fourth Proportional to 516.31, 712.11 and 358.94

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Solution

The fourth proportional to 516.31, 712.11 and 358.94 is: 495.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.31 : 712.11 = 358.94 : x
  2. Step 2: Convert to fraction form
    516.31/712.11 = 358.94/x
  3. Step 3: Cross multiply
    516.31x = 712.11 × 358.94
  4. Step 4: Simplify right side
    516.31x = 255,599.41
  5. Step 5: Solve for x
    x = 255,599.41/516.31
  6. Step 6: Final answer
    x = 495.06

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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.