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Finding the Fourth Proportional to 127.03, 191.41 and 104.70

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Solution

The fourth proportional to 127.03, 191.41 and 104.70 is: 157.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.03 : 191.41 = 104.70 : x
  2. Step 2: Convert to fraction form
    127.03/191.41 = 104.70/x
  3. Step 3: Cross multiply
    127.03x = 191.41 × 104.70
  4. Step 4: Simplify right side
    127.03x = 20,040.10
  5. Step 5: Solve for x
    x = 20,040.10/127.03
  6. Step 6: Final answer
    x = 157.77

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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.