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Finding the Fourth Proportional to 133.01, 199.37 and 47.45

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Solution

The fourth proportional to 133.01, 199.37 and 47.45 is: 71.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.01 : 199.37 = 47.45 : x
  2. Step 2: Convert to fraction form
    133.01/199.37 = 47.45/x
  3. Step 3: Cross multiply
    133.01x = 199.37 × 47.45
  4. Step 4: Simplify right side
    133.01x = 9,458.87
  5. Step 5: Solve for x
    x = 9,458.87/133.01
  6. Step 6: Final answer
    x = 71.12

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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.