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Finding the Fourth Proportional to 154.68, 230.96 and 149.08

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Solution

The fourth proportional to 154.68, 230.96 and 149.08 is: 222.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.68 : 230.96 = 149.08 : x
  2. Step 2: Convert to fraction form
    154.68/230.96 = 149.08/x
  3. Step 3: Cross multiply
    154.68x = 230.96 × 149.08
  4. Step 4: Simplify right side
    154.68x = 34,431.52
  5. Step 5: Solve for x
    x = 34,431.52/154.68
  6. Step 6: Final answer
    x = 222.60

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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.