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Finding the Fourth Proportional to 46.42, 69.61 and 15.56

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Solution

The fourth proportional to 46.42, 69.61 and 15.56 is: 23.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.42 : 69.61 = 15.56 : x
  2. Step 2: Convert to fraction form
    46.42/69.61 = 15.56/x
  3. Step 3: Cross multiply
    46.42x = 69.61 × 15.56
  4. Step 4: Simplify right side
    46.42x = 1,083.43
  5. Step 5: Solve for x
    x = 1,083.43/46.42
  6. Step 6: Final answer
    x = 23.34

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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.