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Finding the Fourth Proportional to 37.94, 52.37 and 22.40

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Solution

The fourth proportional to 37.94, 52.37 and 22.40 is: 30.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    37.94 : 52.37 = 22.40 : x
  2. Step 2: Convert to fraction form
    37.94/52.37 = 22.40/x
  3. Step 3: Cross multiply
    37.94x = 52.37 × 22.40
  4. Step 4: Simplify right side
    37.94x = 1,173.17
  5. Step 5: Solve for x
    x = 1,173.17/37.94
  6. Step 6: Final answer
    x = 30.92

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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.