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Finding the Fourth Proportional to 775.33, 1,164.66 and 486.97

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Solution

The fourth proportional to 775.33, 1,164.66 and 486.97 is: 731.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    775.33 : 1,164.66 = 486.97 : x
  2. Step 2: Convert to fraction form
    775.33/1,164.66 = 486.97/x
  3. Step 3: Cross multiply
    775.33x = 1,164.66 × 486.97
  4. Step 4: Simplify right side
    775.33x = 567,154.48
  5. Step 5: Solve for x
    x = 567,154.48/775.33
  6. Step 6: Final answer
    x = 731.50

Related Problems

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Double scale
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1.5x scale

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.