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Finding the Fourth Proportional to 1,738.73, 2,606.73 and 642.50

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Solution

The fourth proportional to 1,738.73, 2,606.73 and 642.50 is: 963.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,738.73 : 2,606.73 = 642.50 : x
  2. Step 2: Convert to fraction form
    1,738.73/2,606.73 = 642.50/x
  3. Step 3: Cross multiply
    1,738.73x = 2,606.73 × 642.50
  4. Step 4: Simplify right side
    1,738.73x = 1,674,824.03
  5. Step 5: Solve for x
    x = 1,674,824.03/1,738.73
  6. Step 6: Final answer
    x = 963.25

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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.