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Finding the Fourth Proportional to 424.65, 635.94 and 294.28

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Solution

The fourth proportional to 424.65, 635.94 and 294.28 is: 440.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.65 : 635.94 = 294.28 : x
  2. Step 2: Convert to fraction form
    424.65/635.94 = 294.28/x
  3. Step 3: Cross multiply
    424.65x = 635.94 × 294.28
  4. Step 4: Simplify right side
    424.65x = 187,141.24
  5. Step 5: Solve for x
    x = 187,141.24/424.65
  6. Step 6: Final answer
    x = 440.70

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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.