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Finding the Fourth Proportional to 374.48, 516.89 and 250.15

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Solution

The fourth proportional to 374.48, 516.89 and 250.15 is: 345.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.48 : 516.89 = 250.15 : x
  2. Step 2: Convert to fraction form
    374.48/516.89 = 250.15/x
  3. Step 3: Cross multiply
    374.48x = 516.89 × 250.15
  4. Step 4: Simplify right side
    374.48x = 129,300.03
  5. Step 5: Solve for x
    x = 129,300.03/374.48
  6. Step 6: Final answer
    x = 345.28

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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.