Home / 726.03-1,089.39-263.90

Finding the Fourth Proportional to 726.03, 1,089.39 and 263.90

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Solution

The fourth proportional to 726.03, 1,089.39 and 263.90 is: 395.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    726.03 : 1,089.39 = 263.90 : x
  2. Step 2: Convert to fraction form
    726.03/1,089.39 = 263.90/x
  3. Step 3: Cross multiply
    726.03x = 1,089.39 × 263.90
  4. Step 4: Simplify right side
    726.03x = 287,490.02
  5. Step 5: Solve for x
    x = 287,490.02/726.03
  6. Step 6: Final answer
    x = 395.98

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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.