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Finding the Fourth Proportional to 542.84, 749.00 and 321.86

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Solution

The fourth proportional to 542.84, 749.00 and 321.86 is: 444.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.84 : 749.00 = 321.86 : x
  2. Step 2: Convert to fraction form
    542.84/749.00 = 321.86/x
  3. Step 3: Cross multiply
    542.84x = 749.00 × 321.86
  4. Step 4: Simplify right side
    542.84x = 241,069.79
  5. Step 5: Solve for x
    x = 241,069.79/542.84
  6. Step 6: Final answer
    x = 444.09

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.