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Finding the Fourth Proportional to 945.59, 1,305.11 and 596.21

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Solution

The fourth proportional to 945.59, 1,305.11 and 596.21 is: 822.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    945.59 : 1,305.11 = 596.21 : x
  2. Step 2: Convert to fraction form
    945.59/1,305.11 = 596.21/x
  3. Step 3: Cross multiply
    945.59x = 1,305.11 × 596.21
  4. Step 4: Simplify right side
    945.59x = 778,114.60
  5. Step 5: Solve for x
    x = 778,114.60/945.59
  6. Step 6: Final answer
    x = 822.89

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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.