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Finding the Fourth Proportional to 1,412.16, 1,949.03 and 852.68

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Solution

The fourth proportional to 1,412.16, 1,949.03 and 852.68 is: 1,176.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412.16 : 1,949.03 = 852.68 : x
  2. Step 2: Convert to fraction form
    1,412.16/1,949.03 = 852.68/x
  3. Step 3: Cross multiply
    1,412.16x = 1,949.03 × 852.68
  4. Step 4: Simplify right side
    1,412.16x = 1,661,898.90
  5. Step 5: Solve for x
    x = 1,661,898.90/1,412.16
  6. Step 6: Final answer
    x = 1,176.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.