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Finding the Fourth Proportional to 823.35, 1,233.54 and 706.71

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Solution

The fourth proportional to 823.35, 1,233.54 and 706.71 is: 1,058.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    823.35 : 1,233.54 = 706.71 : x
  2. Step 2: Convert to fraction form
    823.35/1,233.54 = 706.71/x
  3. Step 3: Cross multiply
    823.35x = 1,233.54 × 706.71
  4. Step 4: Simplify right side
    823.35x = 871,755.05
  5. Step 5: Solve for x
    x = 871,755.05/823.35
  6. Step 6: Final answer
    x = 1,058.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.