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Finding the Fourth Proportional to 726.01, 1,088.64 and 263.68

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Solution

The fourth proportional to 726.01, 1,088.64 and 263.68 is: 395.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    726.01 : 1,088.64 = 263.68 : x
  2. Step 2: Convert to fraction form
    726.01/1,088.64 = 263.68/x
  3. Step 3: Cross multiply
    726.01x = 1,088.64 × 263.68
  4. Step 4: Simplify right side
    726.01x = 287,049.87
  5. Step 5: Solve for x
    x = 287,049.87/726.01
  6. Step 6: Final answer
    x = 395.38

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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.