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Finding the Fourth Proportional to 654.22, 981.35 and 329.41

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Solution

The fourth proportional to 654.22, 981.35 and 329.41 is: 494.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.22 : 981.35 = 329.41 : x
  2. Step 2: Convert to fraction form
    654.22/981.35 = 329.41/x
  3. Step 3: Cross multiply
    654.22x = 981.35 × 329.41
  4. Step 4: Simplify right side
    654.22x = 323,266.50
  5. Step 5: Solve for x
    x = 323,266.50/654.22
  6. Step 6: Final answer
    x = 494.13

Related Problems

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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.