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Finding the Fourth Proportional to 71.65, 98.77 and 60.03

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Solution

The fourth proportional to 71.65, 98.77 and 60.03 is: 82.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71.65 : 98.77 = 60.03 : x
  2. Step 2: Convert to fraction form
    71.65/98.77 = 60.03/x
  3. Step 3: Cross multiply
    71.65x = 98.77 × 60.03
  4. Step 4: Simplify right side
    71.65x = 5,929.01
  5. Step 5: Solve for x
    x = 5,929.01/71.65
  6. Step 6: Final answer
    x = 82.75

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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.