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Finding the Fourth Proportional to 46.18, 63.72 and 27.74

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Solution

The fourth proportional to 46.18, 63.72 and 27.74 is: 38.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.18 : 63.72 = 27.74 : x
  2. Step 2: Convert to fraction form
    46.18/63.72 = 27.74/x
  3. Step 3: Cross multiply
    46.18x = 63.72 × 27.74
  4. Step 4: Simplify right side
    46.18x = 1,767.59
  5. Step 5: Solve for x
    x = 1,767.59/46.18
  6. Step 6: Final answer
    x = 38.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.