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Finding the Fourth Proportional to 79.08, 108.84 and 58.32

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Solution

The fourth proportional to 79.08, 108.84 and 58.32 is: 80.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79.08 : 108.84 = 58.32 : x
  2. Step 2: Convert to fraction form
    79.08/108.84 = 58.32/x
  3. Step 3: Cross multiply
    79.08x = 108.84 × 58.32
  4. Step 4: Simplify right side
    79.08x = 6,347.55
  5. Step 5: Solve for x
    x = 6,347.55/79.08
  6. Step 6: Final answer
    x = 80.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.