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Finding the Fourth Proportional to 152.56, 228.80 and 67.04

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Solution

The fourth proportional to 152.56, 228.80 and 67.04 is: 100.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.56 : 228.80 = 67.04 : x
  2. Step 2: Convert to fraction form
    152.56/228.80 = 67.04/x
  3. Step 3: Cross multiply
    152.56x = 228.80 × 67.04
  4. Step 4: Simplify right side
    152.56x = 15,338.75
  5. Step 5: Solve for x
    x = 15,338.75/152.56
  6. Step 6: Final answer
    x = 100.54

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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.