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Finding the Fourth Proportional to 373.52, 515.64 and 256.11

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Solution

The fourth proportional to 373.52, 515.64 and 256.11 is: 353.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.52 : 515.64 = 256.11 : x
  2. Step 2: Convert to fraction form
    373.52/515.64 = 256.11/x
  3. Step 3: Cross multiply
    373.52x = 515.64 × 256.11
  4. Step 4: Simplify right side
    373.52x = 132,060.56
  5. Step 5: Solve for x
    x = 132,060.56/373.52
  6. Step 6: Final answer
    x = 353.56

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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.