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Finding the Fourth Proportional to 79.23, 118.62 and 53.49

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Solution

The fourth proportional to 79.23, 118.62 and 53.49 is: 80.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    79.23 : 118.62 = 53.49 : x
  2. Step 2: Convert to fraction form
    79.23/118.62 = 53.49/x
  3. Step 3: Cross multiply
    79.23x = 118.62 × 53.49
  4. Step 4: Simplify right side
    79.23x = 6,344.98
  5. Step 5: Solve for x
    x = 6,344.98/79.23
  6. Step 6: Final answer
    x = 80.08

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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.