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Finding the Fourth Proportional to 53.12, 79.62 and 24.20

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Solution

The fourth proportional to 53.12, 79.62 and 24.20 is: 36.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.12 : 79.62 = 24.20 : x
  2. Step 2: Convert to fraction form
    53.12/79.62 = 24.20/x
  3. Step 3: Cross multiply
    53.12x = 79.62 × 24.20
  4. Step 4: Simplify right side
    53.12x = 1,926.80
  5. Step 5: Solve for x
    x = 1,926.80/53.12
  6. Step 6: Final answer
    x = 36.27

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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.