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Finding the Fourth Proportional to 543.00, 749.25 and 321.98

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Solution

The fourth proportional to 543.00, 749.25 and 321.98 is: 444.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.00 : 749.25 = 321.98 : x
  2. Step 2: Convert to fraction form
    543.00/749.25 = 321.98/x
  3. Step 3: Cross multiply
    543.00x = 749.25 × 321.98
  4. Step 4: Simplify right side
    543.00x = 241,239.77
  5. Step 5: Solve for x
    x = 241,239.77/543.00
  6. Step 6: Final answer
    x = 444.27

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Why These Related Problems?

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