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Finding the Fourth Proportional to 101.65, 140.27 and 57.97

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Solution

The fourth proportional to 101.65, 140.27 and 57.97 is: 80.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.65 : 140.27 = 57.97 : x
  2. Step 2: Convert to fraction form
    101.65/140.27 = 57.97/x
  3. Step 3: Cross multiply
    101.65x = 140.27 × 57.97
  4. Step 4: Simplify right side
    101.65x = 8,131.16
  5. Step 5: Solve for x
    x = 8,131.16/101.65
  6. Step 6: Final answer
    x = 80.00

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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.