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Finding the Fourth Proportional to 1,798.62, 2,696.90 and 701.72

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Solution

The fourth proportional to 1,798.62, 2,696.90 and 701.72 is: 1,052.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,798.62 : 2,696.90 = 701.72 : x
  2. Step 2: Convert to fraction form
    1,798.62/2,696.90 = 701.72/x
  3. Step 3: Cross multiply
    1,798.62x = 2,696.90 × 701.72
  4. Step 4: Simplify right side
    1,798.62x = 1,892,468.67
  5. Step 5: Solve for x
    x = 1,892,468.67/1,798.62
  6. Step 6: Final answer
    x = 1,052.18

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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.