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Finding the Fourth Proportional to 46.33, 63.75 and 40.18

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Solution

The fourth proportional to 46.33, 63.75 and 40.18 is: 55.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.33 : 63.75 = 40.18 : x
  2. Step 2: Convert to fraction form
    46.33/63.75 = 40.18/x
  3. Step 3: Cross multiply
    46.33x = 63.75 × 40.18
  4. Step 4: Simplify right side
    46.33x = 2,561.48
  5. Step 5: Solve for x
    x = 2,561.48/46.33
  6. Step 6: Final answer
    x = 55.29

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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.