Home / 1,490.36-2,234.16-515.76

Finding the Fourth Proportional to 1,490.36, 2,234.16 and 515.76

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Solution

The fourth proportional to 1,490.36, 2,234.16 and 515.76 is: 773.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.36 : 2,234.16 = 515.76 : x
  2. Step 2: Convert to fraction form
    1,490.36/2,234.16 = 515.76/x
  3. Step 3: Cross multiply
    1,490.36x = 2,234.16 × 515.76
  4. Step 4: Simplify right side
    1,490.36x = 1,152,290.36
  5. Step 5: Solve for x
    x = 1,152,290.36/1,490.36
  6. Step 6: Final answer
    x = 773.17

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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.