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Finding the Fourth Proportional to 591.27, 815.72 and 358.53

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Solution

The fourth proportional to 591.27, 815.72 and 358.53 is: 494.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.27 : 815.72 = 358.53 : x
  2. Step 2: Convert to fraction form
    591.27/815.72 = 358.53/x
  3. Step 3: Cross multiply
    591.27x = 815.72 × 358.53
  4. Step 4: Simplify right side
    591.27x = 292,458.30
  5. Step 5: Solve for x
    x = 292,458.30/591.27
  6. Step 6: Final answer
    x = 494.63

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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.