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Finding the Fourth Proportional to 448.67, 669.18 and 440.88

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Solution

The fourth proportional to 448.67, 669.18 and 440.88 is: 657.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.67 : 669.18 = 440.88 : x
  2. Step 2: Convert to fraction form
    448.67/669.18 = 440.88/x
  3. Step 3: Cross multiply
    448.67x = 669.18 × 440.88
  4. Step 4: Simplify right side
    448.67x = 295,027.22
  5. Step 5: Solve for x
    x = 295,027.22/448.67
  6. Step 6: Final answer
    x = 657.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.