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Finding the Fourth Proportional to 894.24, 1,234.60 and 579.66

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Solution

The fourth proportional to 894.24, 1,234.60 and 579.66 is: 800.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.24 : 1,234.60 = 579.66 : x
  2. Step 2: Convert to fraction form
    894.24/1,234.60 = 579.66/x
  3. Step 3: Cross multiply
    894.24x = 1,234.60 × 579.66
  4. Step 4: Simplify right side
    894.24x = 715,648.24
  5. Step 5: Solve for x
    x = 715,648.24/894.24
  6. Step 6: Final answer
    x = 800.29

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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.