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Finding the Fourth Proportional to 543.60, 748.90 and 444.78

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Solution

The fourth proportional to 543.60, 748.90 and 444.78 is: 612.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.60 : 748.90 = 444.78 : x
  2. Step 2: Convert to fraction form
    543.60/748.90 = 444.78/x
  3. Step 3: Cross multiply
    543.60x = 748.90 × 444.78
  4. Step 4: Simplify right side
    543.60x = 333,095.74
  5. Step 5: Solve for x
    x = 333,095.74/543.60
  6. Step 6: Final answer
    x = 612.76

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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.