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Finding the Fourth Proportional to 15.80, 24.16 and 15.80

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Solution

The fourth proportional to 15.80, 24.16 and 15.80 is: 24.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15.80 : 24.16 = 15.80 : x
  2. Step 2: Convert to fraction form
    15.80/24.16 = 15.80/x
  3. Step 3: Cross multiply
    15.80x = 24.16 × 15.80
  4. Step 4: Simplify right side
    15.80x = 381.73
  5. Step 5: Solve for x
    x = 381.73/15.80
  6. Step 6: Final answer
    x = 24.16

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.