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Finding the Fourth Proportional to 542.21, 813.66 and 234.12

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Solution

The fourth proportional to 542.21, 813.66 and 234.12 is: 351.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.21 : 813.66 = 234.12 : x
  2. Step 2: Convert to fraction form
    542.21/813.66 = 234.12/x
  3. Step 3: Cross multiply
    542.21x = 813.66 × 234.12
  4. Step 4: Simplify right side
    542.21x = 190,494.08
  5. Step 5: Solve for x
    x = 190,494.08/542.21
  6. Step 6: Final answer
    x = 351.33

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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.