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Finding the Fourth Proportional to 314.95, 472.49 and 132.35

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Solution

The fourth proportional to 314.95, 472.49 and 132.35 is: 198.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.95 : 472.49 = 132.35 : x
  2. Step 2: Convert to fraction form
    314.95/472.49 = 132.35/x
  3. Step 3: Cross multiply
    314.95x = 472.49 × 132.35
  4. Step 4: Simplify right side
    314.95x = 62,531.69
  5. Step 5: Solve for x
    x = 62,531.69/314.95
  6. Step 6: Final answer
    x = 198.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.