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Finding the Fourth Proportional to 607.21, 910.80 and 168.49

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Solution

The fourth proportional to 607.21, 910.80 and 168.49 is: 252.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.21 : 910.80 = 168.49 : x
  2. Step 2: Convert to fraction form
    607.21/910.80 = 168.49/x
  3. Step 3: Cross multiply
    607.21x = 910.80 × 168.49
  4. Step 4: Simplify right side
    607.21x = 153,464.92
  5. Step 5: Solve for x
    x = 153,464.92/607.21
  6. Step 6: Final answer
    x = 252.74

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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.