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Finding the Fourth Proportional to 644.31, 966.47 and 233.44

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Solution

The fourth proportional to 644.31, 966.47 and 233.44 is: 350.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.31 : 966.47 = 233.44 : x
  2. Step 2: Convert to fraction form
    644.31/966.47 = 233.44/x
  3. Step 3: Cross multiply
    644.31x = 966.47 × 233.44
  4. Step 4: Simplify right side
    644.31x = 225,609.17
  5. Step 5: Solve for x
    x = 225,609.17/644.31
  6. Step 6: Final answer
    x = 350.16

Related Problems

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Half scale
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Double scale
Find fourth proportional to 645.31, 967.97 and 234.44
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.