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Finding the Fourth Proportional to 372.28, 516.49 and 357.24

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Solution

The fourth proportional to 372.28, 516.49 and 357.24 is: 495.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.28 : 516.49 = 357.24 : x
  2. Step 2: Convert to fraction form
    372.28/516.49 = 357.24/x
  3. Step 3: Cross multiply
    372.28x = 516.49 × 357.24
  4. Step 4: Simplify right side
    372.28x = 184,510.89
  5. Step 5: Solve for x
    x = 184,510.89/372.28
  6. Step 6: Final answer
    x = 495.62

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.