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Finding the Fourth Proportional to 167.12, 250.61 and 51.53

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Solution

The fourth proportional to 167.12, 250.61 and 51.53 is: 77.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.12 : 250.61 = 51.53 : x
  2. Step 2: Convert to fraction form
    167.12/250.61 = 51.53/x
  3. Step 3: Cross multiply
    167.12x = 250.61 × 51.53
  4. Step 4: Simplify right side
    167.12x = 12,912.81
  5. Step 5: Solve for x
    x = 12,912.81/167.12
  6. Step 6: Final answer
    x = 77.27

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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.