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Finding the Fourth Proportional to 304.11, 419.36 and 210.69

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Solution

The fourth proportional to 304.11, 419.36 and 210.69 is: 290.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.11 : 419.36 = 210.69 : x
  2. Step 2: Convert to fraction form
    304.11/419.36 = 210.69/x
  3. Step 3: Cross multiply
    304.11x = 419.36 × 210.69
  4. Step 4: Simplify right side
    304.11x = 88,353.90
  5. Step 5: Solve for x
    x = 88,353.90/304.11
  6. Step 6: Final answer
    x = 290.53

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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.