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Finding the Fourth Proportional to 16.91, 23.49 and 16.77

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Solution

The fourth proportional to 16.91, 23.49 and 16.77 is: 23.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.91 : 23.49 = 16.77 : x
  2. Step 2: Convert to fraction form
    16.91/23.49 = 16.77/x
  3. Step 3: Cross multiply
    16.91x = 23.49 × 16.77
  4. Step 4: Simplify right side
    16.91x = 393.93
  5. Step 5: Solve for x
    x = 393.93/16.91
  6. Step 6: Final answer
    x = 23.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.