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Finding the Fourth Proportional to 795.38, 1,192.98 and 487.22

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Solution

The fourth proportional to 795.38, 1,192.98 and 487.22 is: 730.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    795.38 : 1,192.98 = 487.22 : x
  2. Step 2: Convert to fraction form
    795.38/1,192.98 = 487.22/x
  3. Step 3: Cross multiply
    795.38x = 1,192.98 × 487.22
  4. Step 4: Simplify right side
    795.38x = 581,243.72
  5. Step 5: Solve for x
    x = 581,243.72/795.38
  6. Step 6: Final answer
    x = 730.77

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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.