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Finding the Fourth Proportional to 149.36, 224.12 and 68.16

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Solution

The fourth proportional to 149.36, 224.12 and 68.16 is: 102.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.36 : 224.12 = 68.16 : x
  2. Step 2: Convert to fraction form
    149.36/224.12 = 68.16/x
  3. Step 3: Cross multiply
    149.36x = 224.12 × 68.16
  4. Step 4: Simplify right side
    149.36x = 15,276.02
  5. Step 5: Solve for x
    x = 15,276.02/149.36
  6. Step 6: Final answer
    x = 102.28

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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.