Home / 1,490.36-2,235.94-669.22

Finding the Fourth Proportional to 1,490.36, 2,235.94 and 669.22

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Solution

The fourth proportional to 1,490.36, 2,235.94 and 669.22 is: 1,004.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.36 : 2,235.94 = 669.22 : x
  2. Step 2: Convert to fraction form
    1,490.36/2,235.94 = 669.22/x
  3. Step 3: Cross multiply
    1,490.36x = 2,235.94 × 669.22
  4. Step 4: Simplify right side
    1,490.36x = 1,496,335.77
  5. Step 5: Solve for x
    x = 1,496,335.77/1,490.36
  6. Step 6: Final answer
    x = 1,004.01

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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.