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Finding the Fourth Proportional to 82.93, 124.62 and 79.33

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Solution

The fourth proportional to 82.93, 124.62 and 79.33 is: 119.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    82.93 : 124.62 = 79.33 : x
  2. Step 2: Convert to fraction form
    82.93/124.62 = 79.33/x
  3. Step 3: Cross multiply
    82.93x = 124.62 × 79.33
  4. Step 4: Simplify right side
    82.93x = 9,886.10
  5. Step 5: Solve for x
    x = 9,886.10/82.93
  6. Step 6: Final answer
    x = 119.21

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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.