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Finding the Fourth Proportional to 914.67, 1,372.01 and 265.41

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Solution

The fourth proportional to 914.67, 1,372.01 and 265.41 is: 398.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.67 : 1,372.01 = 265.41 : x
  2. Step 2: Convert to fraction form
    914.67/1,372.01 = 265.41/x
  3. Step 3: Cross multiply
    914.67x = 1,372.01 × 265.41
  4. Step 4: Simplify right side
    914.67x = 364,143.85
  5. Step 5: Solve for x
    x = 364,143.85/914.67
  6. Step 6: Final answer
    x = 398.12

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Why These Related Problems?

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