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Finding the Fourth Proportional to 650.76, 976.16 and 326.76

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Solution

The fourth proportional to 650.76, 976.16 and 326.76 is: 490.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.76 : 976.16 = 326.76 : x
  2. Step 2: Convert to fraction form
    650.76/976.16 = 326.76/x
  3. Step 3: Cross multiply
    650.76x = 976.16 × 326.76
  4. Step 4: Simplify right side
    650.76x = 318,970.04
  5. Step 5: Solve for x
    x = 318,970.04/650.76
  6. Step 6: Final answer
    x = 490.15

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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.