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Finding the Fourth Proportional to 46.16, 63.74 and 31.62

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Solution

The fourth proportional to 46.16, 63.74 and 31.62 is: 43.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.16 : 63.74 = 31.62 : x
  2. Step 2: Convert to fraction form
    46.16/63.74 = 31.62/x
  3. Step 3: Cross multiply
    46.16x = 63.74 × 31.62
  4. Step 4: Simplify right side
    46.16x = 2,015.46
  5. Step 5: Solve for x
    x = 2,015.46/46.16
  6. Step 6: Final answer
    x = 43.66

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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.