Home / 1,490.19-2,235.29-450.20

Finding the Fourth Proportional to 1,490.19, 2,235.29 and 450.20

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Solution

The fourth proportional to 1,490.19, 2,235.29 and 450.20 is: 675.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.19 : 2,235.29 = 450.20 : x
  2. Step 2: Convert to fraction form
    1,490.19/2,235.29 = 450.20/x
  3. Step 3: Cross multiply
    1,490.19x = 2,235.29 × 450.20
  4. Step 4: Simplify right side
    1,490.19x = 1,006,314.13
  5. Step 5: Solve for x
    x = 1,006,314.13/1,490.19
  6. Step 6: Final answer
    x = 675.29

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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.