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Finding the Fourth Proportional to 1,759.61, 2,639.32 and 527.05

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Solution

The fourth proportional to 1,759.61, 2,639.32 and 527.05 is: 790.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,759.61 : 2,639.32 = 527.05 : x
  2. Step 2: Convert to fraction form
    1,759.61/2,639.32 = 527.05/x
  3. Step 3: Cross multiply
    1,759.61x = 2,639.32 × 527.05
  4. Step 4: Simplify right side
    1,759.61x = 1,391,050.97
  5. Step 5: Solve for x
    x = 1,391,050.97/1,759.61
  6. Step 6: Final answer
    x = 790.55

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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.