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Finding the Fourth Proportional to 154.36, 214.15 and 150.76

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Solution

The fourth proportional to 154.36, 214.15 and 150.76 is: 209.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.36 : 214.15 = 150.76 : x
  2. Step 2: Convert to fraction form
    154.36/214.15 = 150.76/x
  3. Step 3: Cross multiply
    154.36x = 214.15 × 150.76
  4. Step 4: Simplify right side
    154.36x = 32,285.25
  5. Step 5: Solve for x
    x = 32,285.25/154.36
  6. Step 6: Final answer
    x = 209.16

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.