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Finding the Fourth Proportional to 684.72, 1,025.88 and 569.88

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Solution

The fourth proportional to 684.72, 1,025.88 and 569.88 is: 853.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.72 : 1,025.88 = 569.88 : x
  2. Step 2: Convert to fraction form
    684.72/1,025.88 = 569.88/x
  3. Step 3: Cross multiply
    684.72x = 1,025.88 × 569.88
  4. Step 4: Simplify right side
    684.72x = 584,628.49
  5. Step 5: Solve for x
    x = 584,628.49/684.72
  6. Step 6: Final answer
    x = 853.82

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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.