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Finding the Fourth Proportional to 1,753.67, 2,630.67 and 828.98

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Solution

The fourth proportional to 1,753.67, 2,630.67 and 828.98 is: 1,243.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,753.67 : 2,630.67 = 828.98 : x
  2. Step 2: Convert to fraction form
    1,753.67/2,630.67 = 828.98/x
  3. Step 3: Cross multiply
    1,753.67x = 2,630.67 × 828.98
  4. Step 4: Simplify right side
    1,753.67x = 2,180,772.82
  5. Step 5: Solve for x
    x = 2,180,772.82/1,753.67
  6. Step 6: Final answer
    x = 1,243.55

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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.