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Finding the Fourth Proportional to 40.53, 60.51 and 39.77

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Solution

The fourth proportional to 40.53, 60.51 and 39.77 is: 59.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.53 : 60.51 = 39.77 : x
  2. Step 2: Convert to fraction form
    40.53/60.51 = 39.77/x
  3. Step 3: Cross multiply
    40.53x = 60.51 × 39.77
  4. Step 4: Simplify right side
    40.53x = 2,406.48
  5. Step 5: Solve for x
    x = 2,406.48/40.53
  6. Step 6: Final answer
    x = 59.38

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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.