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Finding the Fourth Proportional to 149.58, 224.36 and 104.28

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Solution

The fourth proportional to 149.58, 224.36 and 104.28 is: 156.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.58 : 224.36 = 104.28 : x
  2. Step 2: Convert to fraction form
    149.58/224.36 = 104.28/x
  3. Step 3: Cross multiply
    149.58x = 224.36 × 104.28
  4. Step 4: Simplify right side
    149.58x = 23,396.26
  5. Step 5: Solve for x
    x = 23,396.26/149.58
  6. Step 6: Final answer
    x = 156.41

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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.