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Finding the Fourth Proportional to 543.36, 749.73 and 322.38

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Solution

The fourth proportional to 543.36, 749.73 and 322.38 is: 444.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.36 : 749.73 = 322.38 : x
  2. Step 2: Convert to fraction form
    543.36/749.73 = 322.38/x
  3. Step 3: Cross multiply
    543.36x = 749.73 × 322.38
  4. Step 4: Simplify right side
    543.36x = 241,697.96
  5. Step 5: Solve for x
    x = 241,697.96/543.36
  6. Step 6: Final answer
    x = 444.82

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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.