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Finding the Fourth Proportional to 297.50, 410.68 and 194.30

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Solution

The fourth proportional to 297.50, 410.68 and 194.30 is: 268.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.50 : 410.68 = 194.30 : x
  2. Step 2: Convert to fraction form
    297.50/410.68 = 194.30/x
  3. Step 3: Cross multiply
    297.50x = 410.68 × 194.30
  4. Step 4: Simplify right side
    297.50x = 79,795.12
  5. Step 5: Solve for x
    x = 79,795.12/297.50
  6. Step 6: Final answer
    x = 268.22

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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.