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Finding the Fourth Proportional to 880.99, 1,321.49 and 333.03

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Solution

The fourth proportional to 880.99, 1,321.49 and 333.03 is: 499.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.99 : 1,321.49 = 333.03 : x
  2. Step 2: Convert to fraction form
    880.99/1,321.49 = 333.03/x
  3. Step 3: Cross multiply
    880.99x = 1,321.49 × 333.03
  4. Step 4: Simplify right side
    880.99x = 440,095.81
  5. Step 5: Solve for x
    x = 440,095.81/880.99
  6. Step 6: Final answer
    x = 499.55

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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.