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Finding the Fourth Proportional to 940.83, 1,411.35 and 324.36

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Solution

The fourth proportional to 940.83, 1,411.35 and 324.36 is: 486.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    940.83 : 1,411.35 = 324.36 : x
  2. Step 2: Convert to fraction form
    940.83/1,411.35 = 324.36/x
  3. Step 3: Cross multiply
    940.83x = 1,411.35 × 324.36
  4. Step 4: Simplify right side
    940.83x = 457,785.49
  5. Step 5: Solve for x
    x = 457,785.49/940.83
  6. Step 6: Final answer
    x = 486.58

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Half scale
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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.