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Finding the Fourth Proportional to 1,783.72, 2,675.16 and 551.14

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Solution

The fourth proportional to 1,783.72, 2,675.16 and 551.14 is: 826.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,783.72 : 2,675.16 = 551.14 : x
  2. Step 2: Convert to fraction form
    1,783.72/2,675.16 = 551.14/x
  3. Step 3: Cross multiply
    1,783.72x = 2,675.16 × 551.14
  4. Step 4: Simplify right side
    1,783.72x = 1,474,380.99
  5. Step 5: Solve for x
    x = 1,474,380.99/1,783.72
  6. Step 6: Final answer
    x = 826.58

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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.