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Finding the Fourth Proportional to 350.10, 482.90 and 306.36

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Solution

The fourth proportional to 350.10, 482.90 and 306.36 is: 422.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.10 : 482.90 = 306.36 : x
  2. Step 2: Convert to fraction form
    350.10/482.90 = 306.36/x
  3. Step 3: Cross multiply
    350.10x = 482.90 × 306.36
  4. Step 4: Simplify right side
    350.10x = 147,939.71
  5. Step 5: Solve for x
    x = 147,939.71/350.10
  6. Step 6: Final answer
    x = 422.56

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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.