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Finding the Fourth Proportional to 245.90, 339 and 167.08

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Solution

The fourth proportional to 245.90, 339 and 167.08 is: 230.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.90 : 339 = 167.08 : x
  2. Step 2: Convert to fraction form
    245.90/339 = 167.08/x
  3. Step 3: Cross multiply
    245.90x = 339 × 167.08
  4. Step 4: Simplify right side
    245.90x = 56,640.12
  5. Step 5: Solve for x
    x = 56,640.12/245.90
  6. Step 6: Final answer
    x = 230.34

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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.