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Finding the Fourth Proportional to 214.76, 323.31 and 146.72

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Solution

The fourth proportional to 214.76, 323.31 and 146.72 is: 220.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    214.76 : 323.31 = 146.72 : x
  2. Step 2: Convert to fraction form
    214.76/323.31 = 146.72/x
  3. Step 3: Cross multiply
    214.76x = 323.31 × 146.72
  4. Step 4: Simplify right side
    214.76x = 47,434.43
  5. Step 5: Solve for x
    x = 47,434.43/214.76
  6. Step 6: Final answer
    x = 220.88

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.