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Finding the Fourth Proportional to 1,744.56, 2,616.71 and 648.45

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Solution

The fourth proportional to 1,744.56, 2,616.71 and 648.45 is: 972.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,744.56 : 2,616.71 = 648.45 : x
  2. Step 2: Convert to fraction form
    1,744.56/2,616.71 = 648.45/x
  3. Step 3: Cross multiply
    1,744.56x = 2,616.71 × 648.45
  4. Step 4: Simplify right side
    1,744.56x = 1,696,802.36
  5. Step 5: Solve for x
    x = 1,696,802.36/1,744.56
  6. Step 6: Final answer
    x = 972.62

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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.