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Finding the Fourth Proportional to 286.20, 429.99 and 183.69

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Solution

The fourth proportional to 286.20, 429.99 and 183.69 is: 275.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.20 : 429.99 = 183.69 : x
  2. Step 2: Convert to fraction form
    286.20/429.99 = 183.69/x
  3. Step 3: Cross multiply
    286.20x = 429.99 × 183.69
  4. Step 4: Simplify right side
    286.20x = 78,984.86
  5. Step 5: Solve for x
    x = 78,984.86/286.20
  6. Step 6: Final answer
    x = 275.98

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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.