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Finding the Fourth Proportional to 540.03, 810.19 and 193.40

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Solution

The fourth proportional to 540.03, 810.19 and 193.40 is: 290.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.03 : 810.19 = 193.40 : x
  2. Step 2: Convert to fraction form
    540.03/810.19 = 193.40/x
  3. Step 3: Cross multiply
    540.03x = 810.19 × 193.40
  4. Step 4: Simplify right side
    540.03x = 156,685.73
  5. Step 5: Solve for x
    x = 156,685.73/540.03
  6. Step 6: Final answer
    x = 290.14

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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.