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Finding the Fourth Proportional to 170.80, 256.30 and 62.60

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Solution

The fourth proportional to 170.80, 256.30 and 62.60 is: 93.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.80 : 256.30 = 62.60 : x
  2. Step 2: Convert to fraction form
    170.80/256.30 = 62.60/x
  3. Step 3: Cross multiply
    170.80x = 256.30 × 62.60
  4. Step 4: Simplify right side
    170.80x = 16,042.94
  5. Step 5: Solve for x
    x = 16,042.94/170.80
  6. Step 6: Final answer
    x = 93.93

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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.