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Finding the Fourth Proportional to 661.24, 991.52 and 222.33

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Solution

The fourth proportional to 661.24, 991.52 and 222.33 is: 333.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    661.24 : 991.52 = 222.33 : x
  2. Step 2: Convert to fraction form
    661.24/991.52 = 222.33/x
  3. Step 3: Cross multiply
    661.24x = 991.52 × 222.33
  4. Step 4: Simplify right side
    661.24x = 220,444.64
  5. Step 5: Solve for x
    x = 220,444.64/661.24
  6. Step 6: Final answer
    x = 333.38

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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.