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Finding the Fourth Proportional to 229.60, 317.28 and 164.32

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Solution

The fourth proportional to 229.60, 317.28 and 164.32 is: 227.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.60 : 317.28 = 164.32 : x
  2. Step 2: Convert to fraction form
    229.60/317.28 = 164.32/x
  3. Step 3: Cross multiply
    229.60x = 317.28 × 164.32
  4. Step 4: Simplify right side
    229.60x = 52,135.45
  5. Step 5: Solve for x
    x = 52,135.45/229.60
  6. Step 6: Final answer
    x = 227.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.