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Finding the Fourth Proportional to 1,753.69, 2,628.99 and 657.29

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Solution

The fourth proportional to 1,753.69, 2,628.99 and 657.29 is: 985.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,753.69 : 2,628.99 = 657.29 : x
  2. Step 2: Convert to fraction form
    1,753.69/2,628.99 = 657.29/x
  3. Step 3: Cross multiply
    1,753.69x = 2,628.99 × 657.29
  4. Step 4: Simplify right side
    1,753.69x = 1,728,008.84
  5. Step 5: Solve for x
    x = 1,728,008.84/1,753.69
  6. Step 6: Final answer
    x = 985.36

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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.