Home / 1,563.18-2,344.78-393.18

Finding the Fourth Proportional to 1,563.18, 2,344.78 and 393.18

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Solution

The fourth proportional to 1,563.18, 2,344.78 and 393.18 is: 589.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.18 : 2,344.78 = 393.18 : x
  2. Step 2: Convert to fraction form
    1,563.18/2,344.78 = 393.18/x
  3. Step 3: Cross multiply
    1,563.18x = 2,344.78 × 393.18
  4. Step 4: Simplify right side
    1,563.18x = 921,920.60
  5. Step 5: Solve for x
    x = 921,920.60/1,563.18
  6. Step 6: Final answer
    x = 589.77

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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.