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Finding the Fourth Proportional to 152.64, 229.14 and 107.28

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Solution

The fourth proportional to 152.64, 229.14 and 107.28 is: 161.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.64 : 229.14 = 107.28 : x
  2. Step 2: Convert to fraction form
    152.64/229.14 = 107.28/x
  3. Step 3: Cross multiply
    152.64x = 229.14 × 107.28
  4. Step 4: Simplify right side
    152.64x = 24,582.14
  5. Step 5: Solve for x
    x = 24,582.14/152.64
  6. Step 6: Final answer
    x = 161.05

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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.