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Finding the Fourth Proportional to 60.65, 83.72 and 36.08

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Solution

The fourth proportional to 60.65, 83.72 and 36.08 is: 49.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.65 : 83.72 = 36.08 : x
  2. Step 2: Convert to fraction form
    60.65/83.72 = 36.08/x
  3. Step 3: Cross multiply
    60.65x = 83.72 × 36.08
  4. Step 4: Simplify right side
    60.65x = 3,020.62
  5. Step 5: Solve for x
    x = 3,020.62/60.65
  6. Step 6: Final answer
    x = 49.80

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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.