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Finding the Fourth Proportional to 894.06, 1,233.59 and 520.82

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Solution

The fourth proportional to 894.06, 1,233.59 and 520.82 is: 718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.06 : 1,233.59 = 520.82 : x
  2. Step 2: Convert to fraction form
    894.06/1,233.59 = 520.82/x
  3. Step 3: Cross multiply
    894.06x = 1,233.59 × 520.82
  4. Step 4: Simplify right side
    894.06x = 642,469.57
  5. Step 5: Solve for x
    x = 642,469.57/894.06
  6. Step 6: Final answer
    x = 718.60

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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.