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Finding the Fourth Proportional to 542.26, 813.09 and 190.69

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Solution

The fourth proportional to 542.26, 813.09 and 190.69 is: 285.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.26 : 813.09 = 190.69 : x
  2. Step 2: Convert to fraction form
    542.26/813.09 = 190.69/x
  3. Step 3: Cross multiply
    542.26x = 813.09 × 190.69
  4. Step 4: Simplify right side
    542.26x = 155,048.13
  5. Step 5: Solve for x
    x = 155,048.13/542.26
  6. Step 6: Final answer
    x = 285.93

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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.