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Finding the Fourth Proportional to 1,454.46, 2,007.05 and 791.30

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Solution

The fourth proportional to 1,454.46, 2,007.05 and 791.30 is: 1,091.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,454.46 : 2,007.05 = 791.30 : x
  2. Step 2: Convert to fraction form
    1,454.46/2,007.05 = 791.30/x
  3. Step 3: Cross multiply
    1,454.46x = 2,007.05 × 791.30
  4. Step 4: Simplify right side
    1,454.46x = 1,588,164.67
  5. Step 5: Solve for x
    x = 1,588,164.67/1,454.46
  6. Step 6: Final answer
    x = 1,091.93

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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.