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Finding the Fourth Proportional to 372.16, 513.02 and 247.55

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Solution

The fourth proportional to 372.16, 513.02 and 247.55 is: 341.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.16 : 513.02 = 247.55 : x
  2. Step 2: Convert to fraction form
    372.16/513.02 = 247.55/x
  3. Step 3: Cross multiply
    372.16x = 513.02 × 247.55
  4. Step 4: Simplify right side
    372.16x = 126,996.86
  5. Step 5: Solve for x
    x = 126,996.86/372.16
  6. Step 6: Final answer
    x = 341.25

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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.