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Finding the Fourth Proportional to 180.48, 268.71 and 178.32

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Solution

The fourth proportional to 180.48, 268.71 and 178.32 is: 265.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.48 : 268.71 = 178.32 : x
  2. Step 2: Convert to fraction form
    180.48/268.71 = 178.32/x
  3. Step 3: Cross multiply
    180.48x = 268.71 × 178.32
  4. Step 4: Simplify right side
    180.48x = 47,916.37
  5. Step 5: Solve for x
    x = 47,916.37/180.48
  6. Step 6: Final answer
    x = 265.49

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.