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Finding the Fourth Proportional to 1,760.21, 2,639.54 and 527.39

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Solution

The fourth proportional to 1,760.21, 2,639.54 and 527.39 is: 790.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,760.21 : 2,639.54 = 527.39 : x
  2. Step 2: Convert to fraction form
    1,760.21/2,639.54 = 527.39/x
  3. Step 3: Cross multiply
    1,760.21x = 2,639.54 × 527.39
  4. Step 4: Simplify right side
    1,760.21x = 1,392,076.90
  5. Step 5: Solve for x
    x = 1,392,076.90/1,760.21
  6. Step 6: Final answer
    x = 790.86

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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.