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Finding the Fourth Proportional to 245.84, 339.48 and 158.66

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Solution

The fourth proportional to 245.84, 339.48 and 158.66 is: 219.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.84 : 339.48 = 158.66 : x
  2. Step 2: Convert to fraction form
    245.84/339.48 = 158.66/x
  3. Step 3: Cross multiply
    245.84x = 339.48 × 158.66
  4. Step 4: Simplify right side
    245.84x = 53,861.90
  5. Step 5: Solve for x
    x = 53,861.90/245.84
  6. Step 6: Final answer
    x = 219.09

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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.