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Finding the Fourth Proportional to 667.85, 1,001.78 and 235.01

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Solution

The fourth proportional to 667.85, 1,001.78 and 235.01 is: 352.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.85 : 1,001.78 = 235.01 : x
  2. Step 2: Convert to fraction form
    667.85/1,001.78 = 235.01/x
  3. Step 3: Cross multiply
    667.85x = 1,001.78 × 235.01
  4. Step 4: Simplify right side
    667.85x = 235,427.14
  5. Step 5: Solve for x
    x = 235,427.14/667.85
  6. Step 6: Final answer
    x = 352.52

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Double scale
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Similar ratio
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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.