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Finding the Fourth Proportional to 648.68, 973.01 and 161.73

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Solution

The fourth proportional to 648.68, 973.01 and 161.73 is: 242.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.68 : 973.01 = 161.73 : x
  2. Step 2: Convert to fraction form
    648.68/973.01 = 161.73/x
  3. Step 3: Cross multiply
    648.68x = 973.01 × 161.73
  4. Step 4: Simplify right side
    648.68x = 157,364.10
  5. Step 5: Solve for x
    x = 157,364.10/648.68
  6. Step 6: Final answer
    x = 242.59

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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.