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Finding the Fourth Proportional to 669.96, 925.08 and 449.10

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Solution

The fourth proportional to 669.96, 925.08 and 449.10 is: 620.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.96 : 925.08 = 449.10 : x
  2. Step 2: Convert to fraction form
    669.96/925.08 = 449.10/x
  3. Step 3: Cross multiply
    669.96x = 925.08 × 449.10
  4. Step 4: Simplify right side
    669.96x = 415,453.43
  5. Step 5: Solve for x
    x = 415,453.43/669.96
  6. Step 6: Final answer
    x = 620.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.