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Finding the Fourth Proportional to 667.01, 1,000.64 and 228.30

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Solution

The fourth proportional to 667.01, 1,000.64 and 228.30 is: 342.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.01 : 1,000.64 = 228.30 : x
  2. Step 2: Convert to fraction form
    667.01/1,000.64 = 228.30/x
  3. Step 3: Cross multiply
    667.01x = 1,000.64 × 228.30
  4. Step 4: Simplify right side
    667.01x = 228,446.11
  5. Step 5: Solve for x
    x = 228,446.11/667.01
  6. Step 6: Final answer
    x = 342.49

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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.