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Finding the Fourth Proportional to 542.96, 813 and 451.34

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Solution

The fourth proportional to 542.96, 813 and 451.34 is: 675.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.96 : 813 = 451.34 : x
  2. Step 2: Convert to fraction form
    542.96/813 = 451.34/x
  3. Step 3: Cross multiply
    542.96x = 813 × 451.34
  4. Step 4: Simplify right side
    542.96x = 366,939.42
  5. Step 5: Solve for x
    x = 366,939.42/542.96
  6. Step 6: Final answer
    x = 675.81

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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.