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Finding the Fourth Proportional to 908.82, 1,254.62 and 673.38

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Solution

The fourth proportional to 908.82, 1,254.62 and 673.38 is: 929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    908.82 : 1,254.62 = 673.38 : x
  2. Step 2: Convert to fraction form
    908.82/1,254.62 = 673.38/x
  3. Step 3: Cross multiply
    908.82x = 1,254.62 × 673.38
  4. Step 4: Simplify right side
    908.82x = 844,837.70
  5. Step 5: Solve for x
    x = 844,837.70/908.82
  6. Step 6: Final answer
    x = 929.60

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1.5x scale

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.