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Finding the Fourth Proportional to 543.24, 749.59 and 346.71

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Solution

The fourth proportional to 543.24, 749.59 and 346.71 is: 478.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.24 : 749.59 = 346.71 : x
  2. Step 2: Convert to fraction form
    543.24/749.59 = 346.71/x
  3. Step 3: Cross multiply
    543.24x = 749.59 × 346.71
  4. Step 4: Simplify right side
    543.24x = 259,892.29
  5. Step 5: Solve for x
    x = 259,892.29/543.24
  6. Step 6: Final answer
    x = 478.41

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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.