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Finding the Fourth Proportional to 543.19, 749.72 and 322.27

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Solution

The fourth proportional to 543.19, 749.72 and 322.27 is: 444.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.19 : 749.72 = 322.27 : x
  2. Step 2: Convert to fraction form
    543.19/749.72 = 322.27/x
  3. Step 3: Cross multiply
    543.19x = 749.72 × 322.27
  4. Step 4: Simplify right side
    543.19x = 241,612.26
  5. Step 5: Solve for x
    x = 241,612.26/543.19
  6. Step 6: Final answer
    x = 444.80

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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.