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Finding the Fourth Proportional to 63.15, 94.79 and 34.29

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Solution

The fourth proportional to 63.15, 94.79 and 34.29 is: 51.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.15 : 94.79 = 34.29 : x
  2. Step 2: Convert to fraction form
    63.15/94.79 = 34.29/x
  3. Step 3: Cross multiply
    63.15x = 94.79 × 34.29
  4. Step 4: Simplify right side
    63.15x = 3,250.18
  5. Step 5: Solve for x
    x = 3,250.18/63.15
  6. Step 6: Final answer
    x = 51.47

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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.