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Finding the Fourth Proportional to 681.26, 939.77 and 432.14

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Solution

The fourth proportional to 681.26, 939.77 and 432.14 is: 596.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.26 : 939.77 = 432.14 : x
  2. Step 2: Convert to fraction form
    681.26/939.77 = 432.14/x
  3. Step 3: Cross multiply
    681.26x = 939.77 × 432.14
  4. Step 4: Simplify right side
    681.26x = 406,112.21
  5. Step 5: Solve for x
    x = 406,112.21/681.26
  6. Step 6: Final answer
    x = 596.12

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1.5x scale

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.