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Finding the Fourth Proportional to 113.49, 170.15 and 62.15

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Solution

The fourth proportional to 113.49, 170.15 and 62.15 is: 93.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.49 : 170.15 = 62.15 : x
  2. Step 2: Convert to fraction form
    113.49/170.15 = 62.15/x
  3. Step 3: Cross multiply
    113.49x = 170.15 × 62.15
  4. Step 4: Simplify right side
    113.49x = 10,573.66
  5. Step 5: Solve for x
    x = 10,573.66/113.49
  6. Step 6: Final answer
    x = 93.17

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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.