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Finding the Fourth Proportional to 74.02, 111.01 and 35.48

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Solution

The fourth proportional to 74.02, 111.01 and 35.48 is: 53.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.02 : 111.01 = 35.48 : x
  2. Step 2: Convert to fraction form
    74.02/111.01 = 35.48/x
  3. Step 3: Cross multiply
    74.02x = 111.01 × 35.48
  4. Step 4: Simplify right side
    74.02x = 3,938.63
  5. Step 5: Solve for x
    x = 3,938.63/74.02
  6. Step 6: Final answer
    x = 53.21

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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.