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Finding the Fourth Proportional to 112.56, 155.12 and 110.48

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Solution

The fourth proportional to 112.56, 155.12 and 110.48 is: 152.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    112.56 : 155.12 = 110.48 : x
  2. Step 2: Convert to fraction form
    112.56/155.12 = 110.48/x
  3. Step 3: Cross multiply
    112.56x = 155.12 × 110.48
  4. Step 4: Simplify right side
    112.56x = 17,137.66
  5. Step 5: Solve for x
    x = 17,137.66/112.56
  6. Step 6: Final answer
    x = 152.25

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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.