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Finding the Fourth Proportional to 1,324.32, 1,986.48 and 350.36

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Solution

The fourth proportional to 1,324.32, 1,986.48 and 350.36 is: 525.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.32 : 1,986.48 = 350.36 : x
  2. Step 2: Convert to fraction form
    1,324.32/1,986.48 = 350.36/x
  3. Step 3: Cross multiply
    1,324.32x = 1,986.48 × 350.36
  4. Step 4: Simplify right side
    1,324.32x = 695,983.13
  5. Step 5: Solve for x
    x = 695,983.13/1,324.32
  6. Step 6: Final answer
    x = 525.54

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Double scale
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Similar ratio
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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.