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Finding the Fourth Proportional to 1,559.96, 2,340.20 and 694.24

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Solution

The fourth proportional to 1,559.96, 2,340.20 and 694.24 is: 1,041.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.96 : 2,340.20 = 694.24 : x
  2. Step 2: Convert to fraction form
    1,559.96/2,340.20 = 694.24/x
  3. Step 3: Cross multiply
    1,559.96x = 2,340.20 × 694.24
  4. Step 4: Simplify right side
    1,559.96x = 1,624,660.45
  5. Step 5: Solve for x
    x = 1,624,660.45/1,559.96
  6. Step 6: Final answer
    x = 1,041.48

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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.