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Finding the Fourth Proportional to 681.36, 1,022.22 and 248.28

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Solution

The fourth proportional to 681.36, 1,022.22 and 248.28 is: 372.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.36 : 1,022.22 = 248.28 : x
  2. Step 2: Convert to fraction form
    681.36/1,022.22 = 248.28/x
  3. Step 3: Cross multiply
    681.36x = 1,022.22 × 248.28
  4. Step 4: Simplify right side
    681.36x = 253,796.78
  5. Step 5: Solve for x
    x = 253,796.78/681.36
  6. Step 6: Final answer
    x = 372.49

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.