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Finding the Fourth Proportional to 1,476.59, 2,213.37 and 551.57

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Solution

The fourth proportional to 1,476.59, 2,213.37 and 551.57 is: 826.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,476.59 : 2,213.37 = 551.57 : x
  2. Step 2: Convert to fraction form
    1,476.59/2,213.37 = 551.57/x
  3. Step 3: Cross multiply
    1,476.59x = 2,213.37 × 551.57
  4. Step 4: Simplify right side
    1,476.59x = 1,220,817.42
  5. Step 5: Solve for x
    x = 1,220,817.42/1,476.59
  6. Step 6: Final answer
    x = 826.78

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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.