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Finding the Fourth Proportional to 314.87, 472.12 and 95.43

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Solution

The fourth proportional to 314.87, 472.12 and 95.43 is: 143.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.87 : 472.12 = 95.43 : x
  2. Step 2: Convert to fraction form
    314.87/472.12 = 95.43/x
  3. Step 3: Cross multiply
    314.87x = 472.12 × 95.43
  4. Step 4: Simplify right side
    314.87x = 45,053.93
  5. Step 5: Solve for x
    x = 45,053.93/314.87
  6. Step 6: Final answer
    x = 143.09

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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.