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Finding the Fourth Proportional to 46.23, 68.99 and 40.81

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Solution

The fourth proportional to 46.23, 68.99 and 40.81 is: 60.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.23 : 68.99 = 40.81 : x
  2. Step 2: Convert to fraction form
    46.23/68.99 = 40.81/x
  3. Step 3: Cross multiply
    46.23x = 68.99 × 40.81
  4. Step 4: Simplify right side
    46.23x = 2,815.28
  5. Step 5: Solve for x
    x = 2,815.28/46.23
  6. Step 6: Final answer
    x = 60.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.