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Finding the Fourth Proportional to 83.34, 125.50 and 63.20

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Solution

The fourth proportional to 83.34, 125.50 and 63.20 is: 95.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.34 : 125.50 = 63.20 : x
  2. Step 2: Convert to fraction form
    83.34/125.50 = 63.20/x
  3. Step 3: Cross multiply
    83.34x = 125.50 × 63.20
  4. Step 4: Simplify right side
    83.34x = 7,931.60
  5. Step 5: Solve for x
    x = 7,931.60/83.34
  6. Step 6: Final answer
    x = 95.17

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.