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Finding the Fourth Proportional to 1,525.91, 2,289.06 and 551.88

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Solution

The fourth proportional to 1,525.91, 2,289.06 and 551.88 is: 827.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,525.91 : 2,289.06 = 551.88 : x
  2. Step 2: Convert to fraction form
    1,525.91/2,289.06 = 551.88/x
  3. Step 3: Cross multiply
    1,525.91x = 2,289.06 × 551.88
  4. Step 4: Simplify right side
    1,525.91x = 1,263,286.43
  5. Step 5: Solve for x
    x = 1,263,286.43/1,525.91
  6. Step 6: Final answer
    x = 827.89

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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.