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Finding the Fourth Proportional to 654.90, 982.44 and 330.30

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Solution

The fourth proportional to 654.90, 982.44 and 330.30 is: 495.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.90 : 982.44 = 330.30 : x
  2. Step 2: Convert to fraction form
    654.90/982.44 = 330.30/x
  3. Step 3: Cross multiply
    654.90x = 982.44 × 330.30
  4. Step 4: Simplify right side
    654.90x = 324,499.93
  5. Step 5: Solve for x
    x = 324,499.93/654.90
  6. Step 6: Final answer
    x = 495.50

Related Problems

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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.