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Finding the Fourth Proportional to 36.28, 54.21 and 35

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Solution

The fourth proportional to 36.28, 54.21 and 35 is: 52.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    36.28 : 54.21 = 35 : x
  2. Step 2: Convert to fraction form
    36.28/54.21 = 35/x
  3. Step 3: Cross multiply
    36.28x = 54.21 × 35
  4. Step 4: Simplify right side
    36.28x = 1,897.35
  5. Step 5: Solve for x
    x = 1,897.35/36.28
  6. Step 6: Final answer
    x = 52.30

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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.