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Finding the Fourth Proportional to 214.54, 321.97 and 99.04

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Solution

The fourth proportional to 214.54, 321.97 and 99.04 is: 148.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    214.54 : 321.97 = 99.04 : x
  2. Step 2: Convert to fraction form
    214.54/321.97 = 99.04/x
  3. Step 3: Cross multiply
    214.54x = 321.97 × 99.04
  4. Step 4: Simplify right side
    214.54x = 31,886.30
  5. Step 5: Solve for x
    x = 31,886.30/214.54
  6. Step 6: Final answer
    x = 148.63

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.