Home / 1,011.49-1,517.23-318.22

Finding the Fourth Proportional to 1,011.49, 1,517.23 and 318.22

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Solution

The fourth proportional to 1,011.49, 1,517.23 and 318.22 is: 477.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011.49 : 1,517.23 = 318.22 : x
  2. Step 2: Convert to fraction form
    1,011.49/1,517.23 = 318.22/x
  3. Step 3: Cross multiply
    1,011.49x = 1,517.23 × 318.22
  4. Step 4: Simplify right side
    1,011.49x = 482,812.93
  5. Step 5: Solve for x
    x = 482,812.93/1,011.49
  6. Step 6: Final answer
    x = 477.33

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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.