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Finding the Fourth Proportional to 541.80, 812.99 and 379.17

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Solution

The fourth proportional to 541.80, 812.99 and 379.17 is: 568.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.80 : 812.99 = 379.17 : x
  2. Step 2: Convert to fraction form
    541.80/812.99 = 379.17/x
  3. Step 3: Cross multiply
    541.80x = 812.99 × 379.17
  4. Step 4: Simplify right side
    541.80x = 308,259.52
  5. Step 5: Solve for x
    x = 308,259.52/541.80
  6. Step 6: Final answer
    x = 568.95

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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.