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Finding the Fourth Proportional to 880.45, 1,320.21 and 441.22

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Solution

The fourth proportional to 880.45, 1,320.21 and 441.22 is: 661.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.45 : 1,320.21 = 441.22 : x
  2. Step 2: Convert to fraction form
    880.45/1,320.21 = 441.22/x
  3. Step 3: Cross multiply
    880.45x = 1,320.21 × 441.22
  4. Step 4: Simplify right side
    880.45x = 582,503.06
  5. Step 5: Solve for x
    x = 582,503.06/880.45
  6. Step 6: Final answer
    x = 661.60

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.