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Finding the Fourth Proportional to 1,446.33, 1,995.92 and 856.88

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Solution

The fourth proportional to 1,446.33, 1,995.92 and 856.88 is: 1,182.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,446.33 : 1,995.92 = 856.88 : x
  2. Step 2: Convert to fraction form
    1,446.33/1,995.92 = 856.88/x
  3. Step 3: Cross multiply
    1,446.33x = 1,995.92 × 856.88
  4. Step 4: Simplify right side
    1,446.33x = 1,710,265.18
  5. Step 5: Solve for x
    x = 1,710,265.18/1,446.33
  6. Step 6: Final answer
    x = 1,182.48

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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.