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Finding the Fourth Proportional to 1,455.57, 2,008.70 and 792.42

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Solution

The fourth proportional to 1,455.57, 2,008.70 and 792.42 is: 1,093.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.57 : 2,008.70 = 792.42 : x
  2. Step 2: Convert to fraction form
    1,455.57/2,008.70 = 792.42/x
  3. Step 3: Cross multiply
    1,455.57x = 2,008.70 × 792.42
  4. Step 4: Simplify right side
    1,455.57x = 1,591,734.05
  5. Step 5: Solve for x
    x = 1,591,734.05/1,455.57
  6. Step 6: Final answer
    x = 1,093.55

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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.