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Finding the Fourth Proportional to 230.70, 317.98 and 202.62

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Solution

The fourth proportional to 230.70, 317.98 and 202.62 is: 279.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.70 : 317.98 = 202.62 : x
  2. Step 2: Convert to fraction form
    230.70/317.98 = 202.62/x
  3. Step 3: Cross multiply
    230.70x = 317.98 × 202.62
  4. Step 4: Simplify right side
    230.70x = 64,429.11
  5. Step 5: Solve for x
    x = 64,429.11/230.70
  6. Step 6: Final answer
    x = 279.28

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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.