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Finding the Fourth Proportional to 726.10, 1,088.94 and 520.05

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Solution

The fourth proportional to 726.10, 1,088.94 and 520.05 is: 779.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    726.10 : 1,088.94 = 520.05 : x
  2. Step 2: Convert to fraction form
    726.10/1,088.94 = 520.05/x
  3. Step 3: Cross multiply
    726.10x = 1,088.94 × 520.05
  4. Step 4: Simplify right side
    726.10x = 566,309.28
  5. Step 5: Solve for x
    x = 566,309.28/726.10
  6. Step 6: Final answer
    x = 779.94

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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.