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Finding the Fourth Proportional to 681.82, 934.36 and 616.21

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Solution

The fourth proportional to 681.82, 934.36 and 616.21 is: 844.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.82 : 934.36 = 616.21 : x
  2. Step 2: Convert to fraction form
    681.82/934.36 = 616.21/x
  3. Step 3: Cross multiply
    681.82x = 934.36 × 616.21
  4. Step 4: Simplify right side
    681.82x = 575,763.91
  5. Step 5: Solve for x
    x = 575,763.91/681.82
  6. Step 6: Final answer
    x = 844.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.