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Finding the Fourth Proportional to 1,171.19, 1,616.06 and 673.85

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Solution

The fourth proportional to 1,171.19, 1,616.06 and 673.85 is: 929.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171.19 : 1,616.06 = 673.85 : x
  2. Step 2: Convert to fraction form
    1,171.19/1,616.06 = 673.85/x
  3. Step 3: Cross multiply
    1,171.19x = 1,616.06 × 673.85
  4. Step 4: Simplify right side
    1,171.19x = 1,088,982.03
  5. Step 5: Solve for x
    x = 1,088,982.03/1,171.19
  6. Step 6: Final answer
    x = 929.81

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1.5x scale

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.