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Finding the Fourth Proportional to 154.89, 213.89 and 116.01

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Solution

The fourth proportional to 154.89, 213.89 and 116.01 is: 160.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.89 : 213.89 = 116.01 : x
  2. Step 2: Convert to fraction form
    154.89/213.89 = 116.01/x
  3. Step 3: Cross multiply
    154.89x = 213.89 × 116.01
  4. Step 4: Simplify right side
    154.89x = 24,812.80
  5. Step 5: Solve for x
    x = 24,812.80/154.89
  6. Step 6: Final answer
    x = 160.20

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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.