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Finding the Fourth Proportional to 170.89, 256.12 and 62.55

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Solution

The fourth proportional to 170.89, 256.12 and 62.55 is: 93.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.89 : 256.12 = 62.55 : x
  2. Step 2: Convert to fraction form
    170.89/256.12 = 62.55/x
  3. Step 3: Cross multiply
    170.89x = 256.12 × 62.55
  4. Step 4: Simplify right side
    170.89x = 16,019.99
  5. Step 5: Solve for x
    x = 16,019.99/170.89
  6. Step 6: Final answer
    x = 93.75

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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.