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Finding the Fourth Proportional to 976.27, 1,463.48 and 326.55

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Solution

The fourth proportional to 976.27, 1,463.48 and 326.55 is: 489.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.27 : 1,463.48 = 326.55 : x
  2. Step 2: Convert to fraction form
    976.27/1,463.48 = 326.55/x
  3. Step 3: Cross multiply
    976.27x = 1,463.48 × 326.55
  4. Step 4: Simplify right side
    976.27x = 477,899.39
  5. Step 5: Solve for x
    x = 477,899.39/976.27
  6. Step 6: Final answer
    x = 489.52

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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.