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Finding the Fourth Proportional to 625.49, 932.91 and 543.68

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Solution

The fourth proportional to 625.49, 932.91 and 543.68 is: 810.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.49 : 932.91 = 543.68 : x
  2. Step 2: Convert to fraction form
    625.49/932.91 = 543.68/x
  3. Step 3: Cross multiply
    625.49x = 932.91 × 543.68
  4. Step 4: Simplify right side
    625.49x = 507,201.88
  5. Step 5: Solve for x
    x = 507,201.88/625.49
  6. Step 6: Final answer
    x = 810.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.