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Finding the Fourth Proportional to 48.22, 66.20 and 40.93

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Solution

The fourth proportional to 48.22, 66.20 and 40.93 is: 56.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.22 : 66.20 = 40.93 : x
  2. Step 2: Convert to fraction form
    48.22/66.20 = 40.93/x
  3. Step 3: Cross multiply
    48.22x = 66.20 × 40.93
  4. Step 4: Simplify right side
    48.22x = 2,709.57
  5. Step 5: Solve for x
    x = 2,709.57/48.22
  6. Step 6: Final answer
    x = 56.19

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.