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Finding the Fourth Proportional to 423.26, 635.01 and 298.70

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Solution

The fourth proportional to 423.26, 635.01 and 298.70 is: 448.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    423.26 : 635.01 = 298.70 : x
  2. Step 2: Convert to fraction form
    423.26/635.01 = 298.70/x
  3. Step 3: Cross multiply
    423.26x = 635.01 × 298.70
  4. Step 4: Simplify right side
    423.26x = 189,677.49
  5. Step 5: Solve for x
    x = 189,677.49/423.26
  6. Step 6: Final answer
    x = 448.13

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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.