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Finding the Fourth Proportional to 59.69, 82.53 and 55.10

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Solution

The fourth proportional to 59.69, 82.53 and 55.10 is: 76.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.69 : 82.53 = 55.10 : x
  2. Step 2: Convert to fraction form
    59.69/82.53 = 55.10/x
  3. Step 3: Cross multiply
    59.69x = 82.53 × 55.10
  4. Step 4: Simplify right side
    59.69x = 4,546.99
  5. Step 5: Solve for x
    x = 4,546.99/59.69
  6. Step 6: Final answer
    x = 76.18

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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.