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Finding the Fourth Proportional to 372.42, 514.11 and 254.59

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Solution

The fourth proportional to 372.42, 514.11 and 254.59 is: 351.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.42 : 514.11 = 254.59 : x
  2. Step 2: Convert to fraction form
    372.42/514.11 = 254.59/x
  3. Step 3: Cross multiply
    372.42x = 514.11 × 254.59
  4. Step 4: Simplify right side
    372.42x = 130,884.69
  5. Step 5: Solve for x
    x = 130,884.69/372.42
  6. Step 6: Final answer
    x = 351.45

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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.