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Finding the Fourth Proportional to 373.92, 516.06 and 256.05

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Solution

The fourth proportional to 373.92, 516.06 and 256.05 is: 353.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.92 : 516.06 = 256.05 : x
  2. Step 2: Convert to fraction form
    373.92/516.06 = 256.05/x
  3. Step 3: Cross multiply
    373.92x = 516.06 × 256.05
  4. Step 4: Simplify right side
    373.92x = 132,137.16
  5. Step 5: Solve for x
    x = 132,137.16/373.92
  6. Step 6: Final answer
    x = 353.38

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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.