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Finding the Fourth Proportional to 300.66, 453.68 and 289.41

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Solution

The fourth proportional to 300.66, 453.68 and 289.41 is: 436.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.66 : 453.68 = 289.41 : x
  2. Step 2: Convert to fraction form
    300.66/453.68 = 289.41/x
  3. Step 3: Cross multiply
    300.66x = 453.68 × 289.41
  4. Step 4: Simplify right side
    300.66x = 131,298.08
  5. Step 5: Solve for x
    x = 131,298.08/300.66
  6. Step 6: Final answer
    x = 436.70

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.