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Finding the Fourth Proportional to 684.72, 943.56 and 581.04

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Solution

The fourth proportional to 684.72, 943.56 and 581.04 is: 800.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.72 : 943.56 = 581.04 : x
  2. Step 2: Convert to fraction form
    684.72/943.56 = 581.04/x
  3. Step 3: Cross multiply
    684.72x = 943.56 × 581.04
  4. Step 4: Simplify right side
    684.72x = 548,246.10
  5. Step 5: Solve for x
    x = 548,246.10/684.72
  6. Step 6: Final answer
    x = 800.69

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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.