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Finding the Fourth Proportional to 902.84, 1,354.35 and 286.62

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Solution

The fourth proportional to 902.84, 1,354.35 and 286.62 is: 429.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.84 : 1,354.35 = 286.62 : x
  2. Step 2: Convert to fraction form
    902.84/1,354.35 = 286.62/x
  3. Step 3: Cross multiply
    902.84x = 1,354.35 × 286.62
  4. Step 4: Simplify right side
    902.84x = 388,183.80
  5. Step 5: Solve for x
    x = 388,183.80/902.84
  6. Step 6: Final answer
    x = 429.96

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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.