Home / 1,490.31-2,235.78-450.27

Finding the Fourth Proportional to 1,490.31, 2,235.78 and 450.27

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Solution

The fourth proportional to 1,490.31, 2,235.78 and 450.27 is: 675.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.31 : 2,235.78 = 450.27 : x
  2. Step 2: Convert to fraction form
    1,490.31/2,235.78 = 450.27/x
  3. Step 3: Cross multiply
    1,490.31x = 2,235.78 × 450.27
  4. Step 4: Simplify right side
    1,490.31x = 1,006,704.66
  5. Step 5: Solve for x
    x = 1,006,704.66/1,490.31
  6. Step 6: Final answer
    x = 675.50

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1.5x scale

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.