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Finding the Fourth Proportional to 908.22, 1,253.33 and 554.14

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Solution

The fourth proportional to 908.22, 1,253.33 and 554.14 is: 764.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    908.22 : 1,253.33 = 554.14 : x
  2. Step 2: Convert to fraction form
    908.22/1,253.33 = 554.14/x
  3. Step 3: Cross multiply
    908.22x = 1,253.33 × 554.14
  4. Step 4: Simplify right side
    908.22x = 694,520.29
  5. Step 5: Solve for x
    x = 694,520.29/908.22
  6. Step 6: Final answer
    x = 764.70

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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.