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Finding the Fourth Proportional to 300.59, 451.50 and 209.47

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Solution

The fourth proportional to 300.59, 451.50 and 209.47 is: 314.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.59 : 451.50 = 209.47 : x
  2. Step 2: Convert to fraction form
    300.59/451.50 = 209.47/x
  3. Step 3: Cross multiply
    300.59x = 451.50 × 209.47
  4. Step 4: Simplify right side
    300.59x = 94,574.58
  5. Step 5: Solve for x
    x = 94,574.58/300.59
  6. Step 6: Final answer
    x = 314.63

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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.