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Finding the Fourth Proportional to 1,761.05, 2,641.71 and 528.37

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Solution

The fourth proportional to 1,761.05, 2,641.71 and 528.37 is: 792.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761.05 : 2,641.71 = 528.37 : x
  2. Step 2: Convert to fraction form
    1,761.05/2,641.71 = 528.37/x
  3. Step 3: Cross multiply
    1,761.05x = 2,641.71 × 528.37
  4. Step 4: Simplify right side
    1,761.05x = 1,395,800.31
  5. Step 5: Solve for x
    x = 1,395,800.31/1,761.05
  6. Step 6: Final answer
    x = 792.60

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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.