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Finding the Fourth Proportional to 297.23, 410.45 and 214.90

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Solution

The fourth proportional to 297.23, 410.45 and 214.90 is: 296.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.23 : 410.45 = 214.90 : x
  2. Step 2: Convert to fraction form
    297.23/410.45 = 214.90/x
  3. Step 3: Cross multiply
    297.23x = 410.45 × 214.90
  4. Step 4: Simplify right side
    297.23x = 88,203.60
  5. Step 5: Solve for x
    x = 88,203.60/297.23
  6. Step 6: Final answer
    x = 296.76

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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.