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Finding the Fourth Proportional to 510.06, 763.65 and 327.66

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Solution

The fourth proportional to 510.06, 763.65 and 327.66 is: 490.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.06 : 763.65 = 327.66 : x
  2. Step 2: Convert to fraction form
    510.06/763.65 = 327.66/x
  3. Step 3: Cross multiply
    510.06x = 763.65 × 327.66
  4. Step 4: Simplify right side
    510.06x = 250,217.56
  5. Step 5: Solve for x
    x = 250,217.56/510.06
  6. Step 6: Final answer
    x = 490.56

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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.