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Finding the Fourth Proportional to 572.60, 792.78 and 543.80

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Solution

The fourth proportional to 572.60, 792.78 and 543.80 is: 752.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.60 : 792.78 = 543.80 : x
  2. Step 2: Convert to fraction form
    572.60/792.78 = 543.80/x
  3. Step 3: Cross multiply
    572.60x = 792.78 × 543.80
  4. Step 4: Simplify right side
    572.60x = 431,113.76
  5. Step 5: Solve for x
    x = 431,113.76/572.60
  6. Step 6: Final answer
    x = 752.91

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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.