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Finding the Fourth Proportional to 669.20, 1,001.64 and 452

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Solution

The fourth proportional to 669.20, 1,001.64 and 452 is: 676.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.20 : 1,001.64 = 452 : x
  2. Step 2: Convert to fraction form
    669.20/1,001.64 = 452/x
  3. Step 3: Cross multiply
    669.20x = 1,001.64 × 452
  4. Step 4: Simplify right side
    669.20x = 452,741.28
  5. Step 5: Solve for x
    x = 452,741.28/669.20
  6. Step 6: Final answer
    x = 676.54

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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.