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Finding the Fourth Proportional to 269.44, 402.35 and 266.57

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Solution

The fourth proportional to 269.44, 402.35 and 266.57 is: 398.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.44 : 402.35 = 266.57 : x
  2. Step 2: Convert to fraction form
    269.44/402.35 = 266.57/x
  3. Step 3: Cross multiply
    269.44x = 402.35 × 266.57
  4. Step 4: Simplify right side
    269.44x = 107,254.44
  5. Step 5: Solve for x
    x = 107,254.44/269.44
  6. Step 6: Final answer
    x = 398.06

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.