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Finding the Fourth Proportional to 847.86, 1,169.56 and 498.48

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Solution

The fourth proportional to 847.86, 1,169.56 and 498.48 is: 687.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.86 : 1,169.56 = 498.48 : x
  2. Step 2: Convert to fraction form
    847.86/1,169.56 = 498.48/x
  3. Step 3: Cross multiply
    847.86x = 1,169.56 × 498.48
  4. Step 4: Simplify right side
    847.86x = 583,002.27
  5. Step 5: Solve for x
    x = 583,002.27/847.86
  6. Step 6: Final answer
    x = 687.62

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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.