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Finding the Fourth Proportional to 844.70, 1,164.80 and 667.36

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Solution

The fourth proportional to 844.70, 1,164.80 and 667.36 is: 920.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.70 : 1,164.80 = 667.36 : x
  2. Step 2: Convert to fraction form
    844.70/1,164.80 = 667.36/x
  3. Step 3: Cross multiply
    844.70x = 1,164.80 × 667.36
  4. Step 4: Simplify right side
    844.70x = 777,340.93
  5. Step 5: Solve for x
    x = 777,340.93/844.70
  6. Step 6: Final answer
    x = 920.26

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Double scale
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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.