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Finding the Fourth Proportional to 894.41, 1,230.37 and 728.25

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Solution

The fourth proportional to 894.41, 1,230.37 and 728.25 is: 1,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.41 : 1,230.37 = 728.25 : x
  2. Step 2: Convert to fraction form
    894.41/1,230.37 = 728.25/x
  3. Step 3: Cross multiply
    894.41x = 1,230.37 × 728.25
  4. Step 4: Simplify right side
    894.41x = 896,016.95
  5. Step 5: Solve for x
    x = 896,016.95/894.41
  6. Step 6: Final answer
    x = 1,001.80

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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.