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Finding the Fourth Proportional to 245.41, 369.88 and 211.58

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Solution

The fourth proportional to 245.41, 369.88 and 211.58 is: 318.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.41 : 369.88 = 211.58 : x
  2. Step 2: Convert to fraction form
    245.41/369.88 = 211.58/x
  3. Step 3: Cross multiply
    245.41x = 369.88 × 211.58
  4. Step 4: Simplify right side
    245.41x = 78,260.66
  5. Step 5: Solve for x
    x = 78,260.66/245.41
  6. Step 6: Final answer
    x = 318.89

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.