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Finding the Fourth Proportional to 148.19, 204.21 and 127.24

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Solution

The fourth proportional to 148.19, 204.21 and 127.24 is: 175.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.19 : 204.21 = 127.24 : x
  2. Step 2: Convert to fraction form
    148.19/204.21 = 127.24/x
  3. Step 3: Cross multiply
    148.19x = 204.21 × 127.24
  4. Step 4: Simplify right side
    148.19x = 25,983.17
  5. Step 5: Solve for x
    x = 25,983.17/148.19
  6. Step 6: Final answer
    x = 175.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.