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Finding the Fourth Proportional to 908.96, 1,253.26 and 672.52

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Solution

The fourth proportional to 908.96, 1,253.26 and 672.52 is: 927.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    908.96 : 1,253.26 = 672.52 : x
  2. Step 2: Convert to fraction form
    908.96/1,253.26 = 672.52/x
  3. Step 3: Cross multiply
    908.96x = 1,253.26 × 672.52
  4. Step 4: Simplify right side
    908.96x = 842,842.42
  5. Step 5: Solve for x
    x = 842,842.42/908.96
  6. Step 6: Final answer
    x = 927.26

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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.