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Finding the Fourth Proportional to 170.52, 256.43 and 135.89

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Solution

The fourth proportional to 170.52, 256.43 and 135.89 is: 204.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.52 : 256.43 = 135.89 : x
  2. Step 2: Convert to fraction form
    170.52/256.43 = 135.89/x
  3. Step 3: Cross multiply
    170.52x = 256.43 × 135.89
  4. Step 4: Simplify right side
    170.52x = 34,847.25
  5. Step 5: Solve for x
    x = 34,847.25/170.52
  6. Step 6: Final answer
    x = 204.36

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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.