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Finding the Fourth Proportional to 94.27, 130.09 and 61.50

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Solution

The fourth proportional to 94.27, 130.09 and 61.50 is: 84.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.27 : 130.09 = 61.50 : x
  2. Step 2: Convert to fraction form
    94.27/130.09 = 61.50/x
  3. Step 3: Cross multiply
    94.27x = 130.09 × 61.50
  4. Step 4: Simplify right side
    94.27x = 8,000.38
  5. Step 5: Solve for x
    x = 8,000.38/94.27
  6. Step 6: Final answer
    x = 84.87

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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.