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Finding the Fourth Proportional to 1,631.27, 2,444.74 and 763.76

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Solution

The fourth proportional to 1,631.27, 2,444.74 and 763.76 is: 1,144.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.27 : 2,444.74 = 763.76 : x
  2. Step 2: Convert to fraction form
    1,631.27/2,444.74 = 763.76/x
  3. Step 3: Cross multiply
    1,631.27x = 2,444.74 × 763.76
  4. Step 4: Simplify right side
    1,631.27x = 1,867,194.62
  5. Step 5: Solve for x
    x = 1,867,194.62/1,631.27
  6. Step 6: Final answer
    x = 1,144.63

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1.5x scale

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.