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Finding the Fourth Proportional to 297.68, 410.94 and 214.72

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Solution

The fourth proportional to 297.68, 410.94 and 214.72 is: 296.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.68 : 410.94 = 214.72 : x
  2. Step 2: Convert to fraction form
    297.68/410.94 = 214.72/x
  3. Step 3: Cross multiply
    297.68x = 410.94 × 214.72
  4. Step 4: Simplify right side
    297.68x = 88,236.01
  5. Step 5: Solve for x
    x = 88,236.01/297.68
  6. Step 6: Final answer
    x = 296.42

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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.