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Finding the Fourth Proportional to 134.89, 203.31 and 127.45

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Solution

The fourth proportional to 134.89, 203.31 and 127.45 is: 192.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.89 : 203.31 = 127.45 : x
  2. Step 2: Convert to fraction form
    134.89/203.31 = 127.45/x
  3. Step 3: Cross multiply
    134.89x = 203.31 × 127.45
  4. Step 4: Simplify right side
    134.89x = 25,911.86
  5. Step 5: Solve for x
    x = 25,911.86/134.89
  6. Step 6: Final answer
    x = 192.10

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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.