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Finding the Fourth Proportional to 1,455.48, 2,008.56 and 792.35

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Solution

The fourth proportional to 1,455.48, 2,008.56 and 792.35 is: 1,093.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.48 : 2,008.56 = 792.35 : x
  2. Step 2: Convert to fraction form
    1,455.48/2,008.56 = 792.35/x
  3. Step 3: Cross multiply
    1,455.48x = 2,008.56 × 792.35
  4. Step 4: Simplify right side
    1,455.48x = 1,591,472.47
  5. Step 5: Solve for x
    x = 1,591,472.47/1,455.48
  6. Step 6: Final answer
    x = 1,093.43

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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.