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Finding the Fourth Proportional to 112.32, 155.01 and 62.53

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Solution

The fourth proportional to 112.32, 155.01 and 62.53 is: 86.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112.32 : 155.01 = 62.53 : x
  2. Step 2: Convert to fraction form
    112.32/155.01 = 62.53/x
  3. Step 3: Cross multiply
    112.32x = 155.01 × 62.53
  4. Step 4: Simplify right side
    112.32x = 9,693.14
  5. Step 5: Solve for x
    x = 9,693.14/112.32
  6. Step 6: Final answer
    x = 86.30

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Why These Related Problems?

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