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Finding the Fourth Proportional to 681.70, 940.26 and 524.38

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Solution

The fourth proportional to 681.70, 940.26 and 524.38 is: 723.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.70 : 940.26 = 524.38 : x
  2. Step 2: Convert to fraction form
    681.70/940.26 = 524.38/x
  3. Step 3: Cross multiply
    681.70x = 940.26 × 524.38
  4. Step 4: Simplify right side
    681.70x = 493,053.54
  5. Step 5: Solve for x
    x = 493,053.54/681.70
  6. Step 6: Final answer
    x = 723.27

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Double scale
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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.