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Finding the Fourth Proportional to 722.76, 1,088.01 and 622.29

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Solution

The fourth proportional to 722.76, 1,088.01 and 622.29 is: 936.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.76 : 1,088.01 = 622.29 : x
  2. Step 2: Convert to fraction form
    722.76/1,088.01 = 622.29/x
  3. Step 3: Cross multiply
    722.76x = 1,088.01 × 622.29
  4. Step 4: Simplify right side
    722.76x = 677,057.74
  5. Step 5: Solve for x
    x = 677,057.74/722.76
  6. Step 6: Final answer
    x = 936.77

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.