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Finding the Fourth Proportional to 880.83, 1,321.43 and 295.76

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Solution

The fourth proportional to 880.83, 1,321.43 and 295.76 is: 443.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.83 : 1,321.43 = 295.76 : x
  2. Step 2: Convert to fraction form
    880.83/1,321.43 = 295.76/x
  3. Step 3: Cross multiply
    880.83x = 1,321.43 × 295.76
  4. Step 4: Simplify right side
    880.83x = 390,827.96
  5. Step 5: Solve for x
    x = 390,827.96/880.83
  6. Step 6: Final answer
    x = 443.70

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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.