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Finding the Fourth Proportional to 964.26, 1,330.72 and 550.26

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Solution

The fourth proportional to 964.26, 1,330.72 and 550.26 is: 759.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.26 : 1,330.72 = 550.26 : x
  2. Step 2: Convert to fraction form
    964.26/1,330.72 = 550.26/x
  3. Step 3: Cross multiply
    964.26x = 1,330.72 × 550.26
  4. Step 4: Simplify right side
    964.26x = 732,241.99
  5. Step 5: Solve for x
    x = 732,241.99/964.26
  6. Step 6: Final answer
    x = 759.38

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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.