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Finding the Fourth Proportional to 229.68, 317.25 and 202.14

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Solution

The fourth proportional to 229.68, 317.25 and 202.14 is: 279.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.68 : 317.25 = 202.14 : x
  2. Step 2: Convert to fraction form
    229.68/317.25 = 202.14/x
  3. Step 3: Cross multiply
    229.68x = 317.25 × 202.14
  4. Step 4: Simplify right side
    229.68x = 64,128.92
  5. Step 5: Solve for x
    x = 64,128.92/229.68
  6. Step 6: Final answer
    x = 279.21

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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.