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Finding the Fourth Proportional to 79.22, 118.96 and 58.86

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Solution

The fourth proportional to 79.22, 118.96 and 58.86 is: 88.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79.22 : 118.96 = 58.86 : x
  2. Step 2: Convert to fraction form
    79.22/118.96 = 58.86/x
  3. Step 3: Cross multiply
    79.22x = 118.96 × 58.86
  4. Step 4: Simplify right side
    79.22x = 7,001.99
  5. Step 5: Solve for x
    x = 7,001.99/79.22
  6. Step 6: Final answer
    x = 88.39

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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.