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Finding the Fourth Proportional to 543.23, 749.31 and 322.17

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Solution

The fourth proportional to 543.23, 749.31 and 322.17 is: 444.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.23 : 749.31 = 322.17 : x
  2. Step 2: Convert to fraction form
    543.23/749.31 = 322.17/x
  3. Step 3: Cross multiply
    543.23x = 749.31 × 322.17
  4. Step 4: Simplify right side
    543.23x = 241,405.20
  5. Step 5: Solve for x
    x = 241,405.20/543.23
  6. Step 6: Final answer
    x = 444.39

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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.