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Finding the Fourth Proportional to 180.02, 248.68 and 157.85

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Solution

The fourth proportional to 180.02, 248.68 and 157.85 is: 218.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.02 : 248.68 = 157.85 : x
  2. Step 2: Convert to fraction form
    180.02/248.68 = 157.85/x
  3. Step 3: Cross multiply
    180.02x = 248.68 × 157.85
  4. Step 4: Simplify right side
    180.02x = 39,254.14
  5. Step 5: Solve for x
    x = 39,254.14/180.02
  6. Step 6: Final answer
    x = 218.05

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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.