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Finding the Fourth Proportional to 218.73, 302.03 and 160.05

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Solution

The fourth proportional to 218.73, 302.03 and 160.05 is: 221.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.73 : 302.03 = 160.05 : x
  2. Step 2: Convert to fraction form
    218.73/302.03 = 160.05/x
  3. Step 3: Cross multiply
    218.73x = 302.03 × 160.05
  4. Step 4: Simplify right side
    218.73x = 48,339.90
  5. Step 5: Solve for x
    x = 48,339.90/218.73
  6. Step 6: Final answer
    x = 221.00

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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.