Home / 726.20-1,089.75-263.95

Finding the Fourth Proportional to 726.20, 1,089.75 and 263.95

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Solution

The fourth proportional to 726.20, 1,089.75 and 263.95 is: 396.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    726.20 : 1,089.75 = 263.95 : x
  2. Step 2: Convert to fraction form
    726.20/1,089.75 = 263.95/x
  3. Step 3: Cross multiply
    726.20x = 1,089.75 × 263.95
  4. Step 4: Simplify right side
    726.20x = 287,636.25
  5. Step 5: Solve for x
    x = 287,636.25/726.20
  6. Step 6: Final answer
    x = 396.08

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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.