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Finding the Fourth Proportional to 1,065.69, 1,599.57 and 872.94

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Solution

The fourth proportional to 1,065.69, 1,599.57 and 872.94 is: 1,310.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065.69 : 1,599.57 = 872.94 : x
  2. Step 2: Convert to fraction form
    1,065.69/1,599.57 = 872.94/x
  3. Step 3: Cross multiply
    1,065.69x = 1,599.57 × 872.94
  4. Step 4: Simplify right side
    1,065.69x = 1,396,328.64
  5. Step 5: Solve for x
    x = 1,396,328.64/1,065.69
  6. Step 6: Final answer
    x = 1,310.26

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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.