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Finding the Fourth Proportional to 856.68, 1,283.82 and 466.38

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Solution

The fourth proportional to 856.68, 1,283.82 and 466.38 is: 698.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    856.68 : 1,283.82 = 466.38 : x
  2. Step 2: Convert to fraction form
    856.68/1,283.82 = 466.38/x
  3. Step 3: Cross multiply
    856.68x = 1,283.82 × 466.38
  4. Step 4: Simplify right side
    856.68x = 598,747.97
  5. Step 5: Solve for x
    x = 598,747.97/856.68
  6. Step 6: Final answer
    x = 698.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.