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Finding the Fourth Proportional to 169.04, 232.88 and 139.84

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Solution

The fourth proportional to 169.04, 232.88 and 139.84 is: 192.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.04 : 232.88 = 139.84 : x
  2. Step 2: Convert to fraction form
    169.04/232.88 = 139.84/x
  3. Step 3: Cross multiply
    169.04x = 232.88 × 139.84
  4. Step 4: Simplify right side
    169.04x = 32,565.94
  5. Step 5: Solve for x
    x = 32,565.94/169.04
  6. Step 6: Final answer
    x = 192.65

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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.