Home / 1,356.12-2,034.18-490.43

Finding the Fourth Proportional to 1,356.12, 2,034.18 and 490.43

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Solution

The fourth proportional to 1,356.12, 2,034.18 and 490.43 is: 735.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356.12 : 2,034.18 = 490.43 : x
  2. Step 2: Convert to fraction form
    1,356.12/2,034.18 = 490.43/x
  3. Step 3: Cross multiply
    1,356.12x = 2,034.18 × 490.43
  4. Step 4: Simplify right side
    1,356.12x = 997,622.90
  5. Step 5: Solve for x
    x = 997,622.90/1,356.12
  6. Step 6: Final answer
    x = 735.65

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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.