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Finding the Fourth Proportional to 148.04, 204.20 and 104.30

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Solution

The fourth proportional to 148.04, 204.20 and 104.30 is: 143.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.04 : 204.20 = 104.30 : x
  2. Step 2: Convert to fraction form
    148.04/204.20 = 104.30/x
  3. Step 3: Cross multiply
    148.04x = 204.20 × 104.30
  4. Step 4: Simplify right side
    148.04x = 21,297.67
  5. Step 5: Solve for x
    x = 21,297.67/148.04
  6. Step 6: Final answer
    x = 143.87

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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.