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Finding the Fourth Proportional to 40.47, 60.28 and 40.27

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Solution

The fourth proportional to 40.47, 60.28 and 40.27 is: 59.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.47 : 60.28 = 40.27 : x
  2. Step 2: Convert to fraction form
    40.47/60.28 = 40.27/x
  3. Step 3: Cross multiply
    40.47x = 60.28 × 40.27
  4. Step 4: Simplify right side
    40.47x = 2,427.48
  5. Step 5: Solve for x
    x = 2,427.48/40.47
  6. Step 6: Final answer
    x = 59.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.