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Finding the Fourth Proportional to 1,145.69, 1,716.73 and 886.33

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Solution

The fourth proportional to 1,145.69, 1,716.73 and 886.33 is: 1,328.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145.69 : 1,716.73 = 886.33 : x
  2. Step 2: Convert to fraction form
    1,145.69/1,716.73 = 886.33/x
  3. Step 3: Cross multiply
    1,145.69x = 1,716.73 × 886.33
  4. Step 4: Simplify right side
    1,145.69x = 1,521,589.23
  5. Step 5: Solve for x
    x = 1,521,589.23/1,145.69
  6. Step 6: Final answer
    x = 1,328.10

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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.