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Finding the Fourth Proportional to 178.80, 268.56 and 152.16

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Solution

The fourth proportional to 178.80, 268.56 and 152.16 is: 228.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.80 : 268.56 = 152.16 : x
  2. Step 2: Convert to fraction form
    178.80/268.56 = 152.16/x
  3. Step 3: Cross multiply
    178.80x = 268.56 × 152.16
  4. Step 4: Simplify right side
    178.80x = 40,864.09
  5. Step 5: Solve for x
    x = 40,864.09/178.80
  6. Step 6: Final answer
    x = 228.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.