Home / 1,490.46-2,236.09-516.63

Finding the Fourth Proportional to 1,490.46, 2,236.09 and 516.63

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Solution

The fourth proportional to 1,490.46, 2,236.09 and 516.63 is: 775.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.46 : 2,236.09 = 516.63 : x
  2. Step 2: Convert to fraction form
    1,490.46/2,236.09 = 516.63/x
  3. Step 3: Cross multiply
    1,490.46x = 2,236.09 × 516.63
  4. Step 4: Simplify right side
    1,490.46x = 1,155,231.18
  5. Step 5: Solve for x
    x = 1,155,231.18/1,490.46
  6. Step 6: Final answer
    x = 775.08

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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.