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Finding the Fourth Proportional to 154.03, 230.08 and 145.15

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Solution

The fourth proportional to 154.03, 230.08 and 145.15 is: 216.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.03 : 230.08 = 145.15 : x
  2. Step 2: Convert to fraction form
    154.03/230.08 = 145.15/x
  3. Step 3: Cross multiply
    154.03x = 230.08 × 145.15
  4. Step 4: Simplify right side
    154.03x = 33,396.11
  5. Step 5: Solve for x
    x = 33,396.11/154.03
  6. Step 6: Final answer
    x = 216.82

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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.