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Finding the Fourth Proportional to 180.84, 248.94 and 157.20

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Solution

The fourth proportional to 180.84, 248.94 and 157.20 is: 216.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.84 : 248.94 = 157.20 : x
  2. Step 2: Convert to fraction form
    180.84/248.94 = 157.20/x
  3. Step 3: Cross multiply
    180.84x = 248.94 × 157.20
  4. Step 4: Simplify right side
    180.84x = 39,133.37
  5. Step 5: Solve for x
    x = 39,133.37/180.84
  6. Step 6: Final answer
    x = 216.40

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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.