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Finding the Fourth Proportional to 29.55, 41.00 and 28.71

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Solution

The fourth proportional to 29.55, 41.00 and 28.71 is: 39.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    29.55 : 41.00 = 28.71 : x
  2. Step 2: Convert to fraction form
    29.55/41.00 = 28.71/x
  3. Step 3: Cross multiply
    29.55x = 41.00 × 28.71
  4. Step 4: Simplify right side
    29.55x = 1,177.18
  5. Step 5: Solve for x
    x = 1,177.18/29.55
  6. Step 6: Final answer
    x = 39.84

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.