Home / 1,272.18-1,908.27-450.52

Finding the Fourth Proportional to 1,272.18, 1,908.27 and 450.52

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Solution

The fourth proportional to 1,272.18, 1,908.27 and 450.52 is: 675.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272.18 : 1,908.27 = 450.52 : x
  2. Step 2: Convert to fraction form
    1,272.18/1,908.27 = 450.52/x
  3. Step 3: Cross multiply
    1,272.18x = 1,908.27 × 450.52
  4. Step 4: Simplify right side
    1,272.18x = 859,709.03
  5. Step 5: Solve for x
    x = 859,709.03/1,272.18
  6. Step 6: Final answer
    x = 675.77

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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.