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Finding the Fourth Proportional to 661.96, 992.92 and 223.24

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Solution

The fourth proportional to 661.96, 992.92 and 223.24 is: 334.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    661.96 : 992.92 = 223.24 : x
  2. Step 2: Convert to fraction form
    661.96/992.92 = 223.24/x
  3. Step 3: Cross multiply
    661.96x = 992.92 × 223.24
  4. Step 4: Simplify right side
    661.96x = 221,659.46
  5. Step 5: Solve for x
    x = 221,659.46/661.96
  6. Step 6: Final answer
    x = 334.85

Related Problems

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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.