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Finding the Fourth Proportional to 36.10, 53.75 and 35.90

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Solution

The fourth proportional to 36.10, 53.75 and 35.90 is: 53.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    36.10 : 53.75 = 35.90 : x
  2. Step 2: Convert to fraction form
    36.10/53.75 = 35.90/x
  3. Step 3: Cross multiply
    36.10x = 53.75 × 35.90
  4. Step 4: Simplify right side
    36.10x = 1,929.63
  5. Step 5: Solve for x
    x = 1,929.63/36.10
  6. Step 6: Final answer
    x = 53.45

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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.