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Finding the Fourth Proportional to 880.85, 1,321.26 and 360.85

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Solution

The fourth proportional to 880.85, 1,321.26 and 360.85 is: 541.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.85 : 1,321.26 = 360.85 : x
  2. Step 2: Convert to fraction form
    880.85/1,321.26 = 360.85/x
  3. Step 3: Cross multiply
    880.85x = 1,321.26 × 360.85
  4. Step 4: Simplify right side
    880.85x = 476,776.67
  5. Step 5: Solve for x
    x = 476,776.67/880.85
  6. Step 6: Final answer
    x = 541.27

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Double scale
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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.