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Finding the Fourth Proportional to 722.05, 1,081.45 and 559.24

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Solution

The fourth proportional to 722.05, 1,081.45 and 559.24 is: 837.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.05 : 1,081.45 = 559.24 : x
  2. Step 2: Convert to fraction form
    722.05/1,081.45 = 559.24/x
  3. Step 3: Cross multiply
    722.05x = 1,081.45 × 559.24
  4. Step 4: Simplify right side
    722.05x = 604,790.10
  5. Step 5: Solve for x
    x = 604,790.10/722.05
  6. Step 6: Final answer
    x = 837.60

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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.