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Finding the Fourth Proportional to 152.02, 228.06 and 79.84

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Solution

The fourth proportional to 152.02, 228.06 and 79.84 is: 119.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.02 : 228.06 = 79.84 : x
  2. Step 2: Convert to fraction form
    152.02/228.06 = 79.84/x
  3. Step 3: Cross multiply
    152.02x = 228.06 × 79.84
  4. Step 4: Simplify right side
    152.02x = 18,208.31
  5. Step 5: Solve for x
    x = 18,208.31/152.02
  6. Step 6: Final answer
    x = 119.78

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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.