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Finding the Fourth Proportional to 180.02, 248.55 and 113.66

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Solution

The fourth proportional to 180.02, 248.55 and 113.66 is: 156.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.02 : 248.55 = 113.66 : x
  2. Step 2: Convert to fraction form
    180.02/248.55 = 113.66/x
  3. Step 3: Cross multiply
    180.02x = 248.55 × 113.66
  4. Step 4: Simplify right side
    180.02x = 28,250.19
  5. Step 5: Solve for x
    x = 28,250.19/180.02
  6. Step 6: Final answer
    x = 156.93

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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.