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Finding the Fourth Proportional to 46.11, 63.77 and 40.65

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Solution

The fourth proportional to 46.11, 63.77 and 40.65 is: 56.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.11 : 63.77 = 40.65 : x
  2. Step 2: Convert to fraction form
    46.11/63.77 = 40.65/x
  3. Step 3: Cross multiply
    46.11x = 63.77 × 40.65
  4. Step 4: Simplify right side
    46.11x = 2,592.25
  5. Step 5: Solve for x
    x = 2,592.25/46.11
  6. Step 6: Final answer
    x = 56.22

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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.