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Finding the Fourth Proportional to 298.04, 446.80 and 102.90

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Solution

The fourth proportional to 298.04, 446.80 and 102.90 is: 154.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.04 : 446.80 = 102.90 : x
  2. Step 2: Convert to fraction form
    298.04/446.80 = 102.90/x
  3. Step 3: Cross multiply
    298.04x = 446.80 × 102.90
  4. Step 4: Simplify right side
    298.04x = 45,977.59
  5. Step 5: Solve for x
    x = 45,977.59/298.04
  6. Step 6: Final answer
    x = 154.27

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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.