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Finding the Fourth Proportional to 54.65, 82.11 and 52.61

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Solution

The fourth proportional to 54.65, 82.11 and 52.61 is: 79.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    54.65 : 82.11 = 52.61 : x
  2. Step 2: Convert to fraction form
    54.65/82.11 = 52.61/x
  3. Step 3: Cross multiply
    54.65x = 82.11 × 52.61
  4. Step 4: Simplify right side
    54.65x = 4,319.81
  5. Step 5: Solve for x
    x = 4,319.81/54.65
  6. Step 6: Final answer
    x = 79.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.