Home / 1,324.72-1,986.57-446.99

Finding the Fourth Proportional to 1,324.72, 1,986.57 and 446.99

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Solution

The fourth proportional to 1,324.72, 1,986.57 and 446.99 is: 670.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.72 : 1,986.57 = 446.99 : x
  2. Step 2: Convert to fraction form
    1,324.72/1,986.57 = 446.99/x
  3. Step 3: Cross multiply
    1,324.72x = 1,986.57 × 446.99
  4. Step 4: Simplify right side
    1,324.72x = 887,966.99
  5. Step 5: Solve for x
    x = 887,966.99/1,324.72
  6. Step 6: Final answer
    x = 670.31

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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.