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Finding the Fourth Proportional to 37.38, 55.84 and 30.58

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Solution

The fourth proportional to 37.38, 55.84 and 30.58 is: 45.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    37.38 : 55.84 = 30.58 : x
  2. Step 2: Convert to fraction form
    37.38/55.84 = 30.58/x
  3. Step 3: Cross multiply
    37.38x = 55.84 × 30.58
  4. Step 4: Simplify right side
    37.38x = 1,707.59
  5. Step 5: Solve for x
    x = 1,707.59/37.38
  6. Step 6: Final answer
    x = 45.68

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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.