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Finding the Fourth Proportional to 91.44, 137.21 and 37.37

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Solution

The fourth proportional to 91.44, 137.21 and 37.37 is: 56.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    91.44 : 137.21 = 37.37 : x
  2. Step 2: Convert to fraction form
    91.44/137.21 = 37.37/x
  3. Step 3: Cross multiply
    91.44x = 137.21 × 37.37
  4. Step 4: Simplify right side
    91.44x = 5,127.69
  5. Step 5: Solve for x
    x = 5,127.69/91.44
  6. Step 6: Final answer
    x = 56.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.