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Finding the Fourth Proportional to 795.68, 1,193.88 and 308.78

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Solution

The fourth proportional to 795.68, 1,193.88 and 308.78 is: 463.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    795.68 : 1,193.88 = 308.78 : x
  2. Step 2: Convert to fraction form
    795.68/1,193.88 = 308.78/x
  3. Step 3: Cross multiply
    795.68x = 1,193.88 × 308.78
  4. Step 4: Simplify right side
    795.68x = 368,646.27
  5. Step 5: Solve for x
    x = 368,646.27/795.68
  6. Step 6: Final answer
    x = 463.31

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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.