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Finding the Fourth Proportional to 671.68, 927.48 and 451.36

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Solution

The fourth proportional to 671.68, 927.48 and 451.36 is: 623.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.68 : 927.48 = 451.36 : x
  2. Step 2: Convert to fraction form
    671.68/927.48 = 451.36/x
  3. Step 3: Cross multiply
    671.68x = 927.48 × 451.36
  4. Step 4: Simplify right side
    671.68x = 418,627.37
  5. Step 5: Solve for x
    x = 418,627.37/671.68
  6. Step 6: Final answer
    x = 623.25

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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.