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Finding the Fourth Proportional to 169.29, 253.62 and 167.40

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Solution

The fourth proportional to 169.29, 253.62 and 167.40 is: 250.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.29 : 253.62 = 167.40 : x
  2. Step 2: Convert to fraction form
    169.29/253.62 = 167.40/x
  3. Step 3: Cross multiply
    169.29x = 253.62 × 167.40
  4. Step 4: Simplify right side
    169.29x = 42,455.99
  5. Step 5: Solve for x
    x = 42,455.99/169.29
  6. Step 6: Final answer
    x = 250.79

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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.