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Finding the Fourth Proportional to 94.01, 129.72 and 52.56

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Solution

The fourth proportional to 94.01, 129.72 and 52.56 is: 72.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.01 : 129.72 = 52.56 : x
  2. Step 2: Convert to fraction form
    94.01/129.72 = 52.56/x
  3. Step 3: Cross multiply
    94.01x = 129.72 × 52.56
  4. Step 4: Simplify right side
    94.01x = 6,818.28
  5. Step 5: Solve for x
    x = 6,818.28/94.01
  6. Step 6: Final answer
    x = 72.53

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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.