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Finding the Fourth Proportional to 113.48, 169.36 and 101.32

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Solution

The fourth proportional to 113.48, 169.36 and 101.32 is: 151.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.48 : 169.36 = 101.32 : x
  2. Step 2: Convert to fraction form
    113.48/169.36 = 101.32/x
  3. Step 3: Cross multiply
    113.48x = 169.36 × 101.32
  4. Step 4: Simplify right side
    113.48x = 17,159.56
  5. Step 5: Solve for x
    x = 17,159.56/113.48
  6. Step 6: Final answer
    x = 151.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.