Home / 1,298.45-1,947.68-324.55

Finding the Fourth Proportional to 1,298.45, 1,947.68 and 324.55

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Solution

The fourth proportional to 1,298.45, 1,947.68 and 324.55 is: 486.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.45 : 1,947.68 = 324.55 : x
  2. Step 2: Convert to fraction form
    1,298.45/1,947.68 = 324.55/x
  3. Step 3: Cross multiply
    1,298.45x = 1,947.68 × 324.55
  4. Step 4: Simplify right side
    1,298.45x = 632,119.54
  5. Step 5: Solve for x
    x = 632,119.54/1,298.45
  6. Step 6: Final answer
    x = 486.83

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1.5x scale

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.