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Finding the Fourth Proportional to 856.19, 1,282.65 and 566.75

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Solution

The fourth proportional to 856.19, 1,282.65 and 566.75 is: 849.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    856.19 : 1,282.65 = 566.75 : x
  2. Step 2: Convert to fraction form
    856.19/1,282.65 = 566.75/x
  3. Step 3: Cross multiply
    856.19x = 1,282.65 × 566.75
  4. Step 4: Simplify right side
    856.19x = 726,941.89
  5. Step 5: Solve for x
    x = 726,941.89/856.19
  6. Step 6: Final answer
    x = 849.04

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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.