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Finding the Fourth Proportional to 1,709.54, 2,563.82 and 669.50

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Solution

The fourth proportional to 1,709.54, 2,563.82 and 669.50 is: 1,004.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,709.54 : 2,563.82 = 669.50 : x
  2. Step 2: Convert to fraction form
    1,709.54/2,563.82 = 669.50/x
  3. Step 3: Cross multiply
    1,709.54x = 2,563.82 × 669.50
  4. Step 4: Simplify right side
    1,709.54x = 1,716,477.49
  5. Step 5: Solve for x
    x = 1,716,477.49/1,709.54
  6. Step 6: Final answer
    x = 1,004.06

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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.