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Finding the Fourth Proportional to 154.77, 232.21 and 68.04

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Solution

The fourth proportional to 154.77, 232.21 and 68.04 is: 102.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.77 : 232.21 = 68.04 : x
  2. Step 2: Convert to fraction form
    154.77/232.21 = 68.04/x
  3. Step 3: Cross multiply
    154.77x = 232.21 × 68.04
  4. Step 4: Simplify right side
    154.77x = 15,798.81
  5. Step 5: Solve for x
    x = 15,798.81/154.77
  6. Step 6: Final answer
    x = 102.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.