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Finding the Fourth Proportional to 154.13, 212.44 and 133.29

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Solution

The fourth proportional to 154.13, 212.44 and 133.29 is: 183.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.13 : 212.44 = 133.29 : x
  2. Step 2: Convert to fraction form
    154.13/212.44 = 133.29/x
  3. Step 3: Cross multiply
    154.13x = 212.44 × 133.29
  4. Step 4: Simplify right side
    154.13x = 28,316.13
  5. Step 5: Solve for x
    x = 28,316.13/154.13
  6. Step 6: Final answer
    x = 183.72

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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.