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Finding the Fourth Proportional to 861.35, 1,188 and 596.23

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Solution

The fourth proportional to 861.35, 1,188 and 596.23 is: 822.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    861.35 : 1,188 = 596.23 : x
  2. Step 2: Convert to fraction form
    861.35/1,188 = 596.23/x
  3. Step 3: Cross multiply
    861.35x = 1,188 × 596.23
  4. Step 4: Simplify right side
    861.35x = 708,321.24
  5. Step 5: Solve for x
    x = 708,321.24/861.35
  6. Step 6: Final answer
    x = 822.34

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Double scale
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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.