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Finding the Fourth Proportional to 448.32, 676.32 and 425.52

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Solution

The fourth proportional to 448.32, 676.32 and 425.52 is: 641.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.32 : 676.32 = 425.52 : x
  2. Step 2: Convert to fraction form
    448.32/676.32 = 425.52/x
  3. Step 3: Cross multiply
    448.32x = 676.32 × 425.52
  4. Step 4: Simplify right side
    448.32x = 287,787.69
  5. Step 5: Solve for x
    x = 287,787.69/448.32
  6. Step 6: Final answer
    x = 641.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.