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Finding the Fourth Proportional to 113.75, 156.98 and 62

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Solution

The fourth proportional to 113.75, 156.98 and 62 is: 85.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.75 : 156.98 = 62 : x
  2. Step 2: Convert to fraction form
    113.75/156.98 = 62/x
  3. Step 3: Cross multiply
    113.75x = 156.98 × 62
  4. Step 4: Simplify right side
    113.75x = 9,732.76
  5. Step 5: Solve for x
    x = 9,732.76/113.75
  6. Step 6: Final answer
    x = 85.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.