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Finding the Fourth Proportional to 16.44, 24.55 and 15

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Solution

The fourth proportional to 16.44, 24.55 and 15 is: 22.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.44 : 24.55 = 15 : x
  2. Step 2: Convert to fraction form
    16.44/24.55 = 15/x
  3. Step 3: Cross multiply
    16.44x = 24.55 × 15
  4. Step 4: Simplify right side
    16.44x = 368.25
  5. Step 5: Solve for x
    x = 368.25/16.44
  6. Step 6: Final answer
    x = 22.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.