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Finding the Fourth Proportional to 894.29, 1,234.19 and 540.38

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Solution

The fourth proportional to 894.29, 1,234.19 and 540.38 is: 745.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.29 : 1,234.19 = 540.38 : x
  2. Step 2: Convert to fraction form
    894.29/1,234.19 = 540.38/x
  3. Step 3: Cross multiply
    894.29x = 1,234.19 × 540.38
  4. Step 4: Simplify right side
    894.29x = 666,936.03
  5. Step 5: Solve for x
    x = 666,936.03/894.29
  6. Step 6: Final answer
    x = 745.78

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1.5x scale

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.