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Finding the Fourth Proportional to 40.01, 54.75 and 39.17

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Solution

The fourth proportional to 40.01, 54.75 and 39.17 is: 53.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.01 : 54.75 = 39.17 : x
  2. Step 2: Convert to fraction form
    40.01/54.75 = 39.17/x
  3. Step 3: Cross multiply
    40.01x = 54.75 × 39.17
  4. Step 4: Simplify right side
    40.01x = 2,144.66
  5. Step 5: Solve for x
    x = 2,144.66/40.01
  6. Step 6: Final answer
    x = 53.60

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.