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Finding the Fourth Proportional to 133.35, 182.88 and 127.81

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Solution

The fourth proportional to 133.35, 182.88 and 127.81 is: 175.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.35 : 182.88 = 127.81 : x
  2. Step 2: Convert to fraction form
    133.35/182.88 = 127.81/x
  3. Step 3: Cross multiply
    133.35x = 182.88 × 127.81
  4. Step 4: Simplify right side
    133.35x = 23,373.89
  5. Step 5: Solve for x
    x = 23,373.89/133.35
  6. Step 6: Final answer
    x = 175.28

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.