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Finding the Fourth Proportional to 374.53, 516.72 and 217.12

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Solution

The fourth proportional to 374.53, 516.72 and 217.12 is: 299.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.53 : 516.72 = 217.12 : x
  2. Step 2: Convert to fraction form
    374.53/516.72 = 217.12/x
  3. Step 3: Cross multiply
    374.53x = 516.72 × 217.12
  4. Step 4: Simplify right side
    374.53x = 112,190.25
  5. Step 5: Solve for x
    x = 112,190.25/374.53
  6. Step 6: Final answer
    x = 299.55

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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.