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Finding the Fourth Proportional to 541.50, 812.20 and 194.82

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Solution

The fourth proportional to 541.50, 812.20 and 194.82 is: 292.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.50 : 812.20 = 194.82 : x
  2. Step 2: Convert to fraction form
    541.50/812.20 = 194.82/x
  3. Step 3: Cross multiply
    541.50x = 812.20 × 194.82
  4. Step 4: Simplify right side
    541.50x = 158,232.80
  5. Step 5: Solve for x
    x = 158,232.80/541.50
  6. Step 6: Final answer
    x = 292.21

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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.