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Finding the Fourth Proportional to 169.32, 233.51 and 111

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Solution

The fourth proportional to 169.32, 233.51 and 111 is: 153.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.32 : 233.51 = 111 : x
  2. Step 2: Convert to fraction form
    169.32/233.51 = 111/x
  3. Step 3: Cross multiply
    169.32x = 233.51 × 111
  4. Step 4: Simplify right side
    169.32x = 25,919.06
  5. Step 5: Solve for x
    x = 25,919.06/169.32
  6. Step 6: Final answer
    x = 153.08

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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.