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Finding the Fourth Proportional to 1,353.73, 1,867.18 and 880.75

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Solution

The fourth proportional to 1,353.73, 1,867.18 and 880.75 is: 1,214.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.73 : 1,867.18 = 880.75 : x
  2. Step 2: Convert to fraction form
    1,353.73/1,867.18 = 880.75/x
  3. Step 3: Cross multiply
    1,353.73x = 1,867.18 × 880.75
  4. Step 4: Simplify right side
    1,353.73x = 1,644,520.99
  5. Step 5: Solve for x
    x = 1,644,520.99/1,353.73
  6. Step 6: Final answer
    x = 1,214.81

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.