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Finding the Fourth Proportional to 169.19, 253.61 and 82.47

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Solution

The fourth proportional to 169.19, 253.61 and 82.47 is: 123.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.19 : 253.61 = 82.47 : x
  2. Step 2: Convert to fraction form
    169.19/253.61 = 82.47/x
  3. Step 3: Cross multiply
    169.19x = 253.61 × 82.47
  4. Step 4: Simplify right side
    169.19x = 20,915.22
  5. Step 5: Solve for x
    x = 20,915.22/169.19
  6. Step 6: Final answer
    x = 123.62

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