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Finding the Fourth Proportional to 682.97, 940.77 and 543.53

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Solution

The fourth proportional to 682.97, 940.77 and 543.53 is: 748.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.97 : 940.77 = 543.53 : x
  2. Step 2: Convert to fraction form
    682.97/940.77 = 543.53/x
  3. Step 3: Cross multiply
    682.97x = 940.77 × 543.53
  4. Step 4: Simplify right side
    682.97x = 511,339.07
  5. Step 5: Solve for x
    x = 511,339.07/682.97
  6. Step 6: Final answer
    x = 748.70

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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.