Home / 1,490.36-2,234.10-515.72

Finding the Fourth Proportional to 1,490.36, 2,234.10 and 515.72

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Solution

The fourth proportional to 1,490.36, 2,234.10 and 515.72 is: 773.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.36 : 2,234.10 = 515.72 : x
  2. Step 2: Convert to fraction form
    1,490.36/2,234.10 = 515.72/x
  3. Step 3: Cross multiply
    1,490.36x = 2,234.10 × 515.72
  4. Step 4: Simplify right side
    1,490.36x = 1,152,170.05
  5. Step 5: Solve for x
    x = 1,152,170.05/1,490.36
  6. Step 6: Final answer
    x = 773.08

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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.