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Finding the Fourth Proportional to 36.55, 55.15 and 35.15

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Solution

The fourth proportional to 36.55, 55.15 and 35.15 is: 53.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    36.55 : 55.15 = 35.15 : x
  2. Step 2: Convert to fraction form
    36.55/55.15 = 35.15/x
  3. Step 3: Cross multiply
    36.55x = 55.15 × 35.15
  4. Step 4: Simplify right side
    36.55x = 1,938.36
  5. Step 5: Solve for x
    x = 1,938.36/36.55
  6. Step 6: Final answer
    x = 53.03

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.