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Finding the Fourth Proportional to 540.80, 811.44 and 194.24

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Solution

The fourth proportional to 540.80, 811.44 and 194.24 is: 291.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.80 : 811.44 = 194.24 : x
  2. Step 2: Convert to fraction form
    540.80/811.44 = 194.24/x
  3. Step 3: Cross multiply
    540.80x = 811.44 × 194.24
  4. Step 4: Simplify right side
    540.80x = 157,614.11
  5. Step 5: Solve for x
    x = 157,614.11/540.80
  6. Step 6: Final answer
    x = 291.45

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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.