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Finding the Fourth Proportional to 794.50, 1,191.90 and 563.46

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Solution

The fourth proportional to 794.50, 1,191.90 and 563.46 is: 845.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.50 : 1,191.90 = 563.46 : x
  2. Step 2: Convert to fraction form
    794.50/1,191.90 = 563.46/x
  3. Step 3: Cross multiply
    794.50x = 1,191.90 × 563.46
  4. Step 4: Simplify right side
    794.50x = 671,587.97
  5. Step 5: Solve for x
    x = 671,587.97/794.50
  6. Step 6: Final answer
    x = 845.30

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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.