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Finding the Fourth Proportional to 667.58, 1,000.82 and 235.04

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Solution

The fourth proportional to 667.58, 1,000.82 and 235.04 is: 352.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.58 : 1,000.82 = 235.04 : x
  2. Step 2: Convert to fraction form
    667.58/1,000.82 = 235.04/x
  3. Step 3: Cross multiply
    667.58x = 1,000.82 × 235.04
  4. Step 4: Simplify right side
    667.58x = 235,228.32
  5. Step 5: Solve for x
    x = 235,228.32/667.58
  6. Step 6: Final answer
    x = 352.36

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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.