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Finding the Fourth Proportional to 795.57, 1,188.40 and 679.47

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Solution

The fourth proportional to 795.57, 1,188.40 and 679.47 is: 1,014.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    795.57 : 1,188.40 = 679.47 : x
  2. Step 2: Convert to fraction form
    795.57/1,188.40 = 679.47/x
  3. Step 3: Cross multiply
    795.57x = 1,188.40 × 679.47
  4. Step 4: Simplify right side
    795.57x = 807,480.45
  5. Step 5: Solve for x
    x = 807,480.45/795.57
  6. Step 6: Final answer
    x = 1,014.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.