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Finding the Fourth Proportional to 154.14, 229.40 and 148.38

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Solution

The fourth proportional to 154.14, 229.40 and 148.38 is: 220.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.14 : 229.40 = 148.38 : x
  2. Step 2: Convert to fraction form
    154.14/229.40 = 148.38/x
  3. Step 3: Cross multiply
    154.14x = 229.40 × 148.38
  4. Step 4: Simplify right side
    154.14x = 34,037.63
  5. Step 5: Solve for x
    x = 34,037.63/154.14
  6. Step 6: Final answer
    x = 220.82

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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.