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Finding the Fourth Proportional to 1,792.36, 2,688.53 and 697.49

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Solution

The fourth proportional to 1,792.36, 2,688.53 and 697.49 is: 1,046.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,792.36 : 2,688.53 = 697.49 : x
  2. Step 2: Convert to fraction form
    1,792.36/2,688.53 = 697.49/x
  3. Step 3: Cross multiply
    1,792.36x = 2,688.53 × 697.49
  4. Step 4: Simplify right side
    1,792.36x = 1,875,217.81
  5. Step 5: Solve for x
    x = 1,875,217.81/1,792.36
  6. Step 6: Final answer
    x = 1,046.23

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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.