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Finding the Fourth Proportional to 128.66, 192.94 and 37.33

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Solution

The fourth proportional to 128.66, 192.94 and 37.33 is: 55.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128.66 : 192.94 = 37.33 : x
  2. Step 2: Convert to fraction form
    128.66/192.94 = 37.33/x
  3. Step 3: Cross multiply
    128.66x = 192.94 × 37.33
  4. Step 4: Simplify right side
    128.66x = 7,202.45
  5. Step 5: Solve for x
    x = 7,202.45/128.66
  6. Step 6: Final answer
    x = 55.98

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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.