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Finding the Fourth Proportional to 240.46, 358.94 and 211.50

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Solution

The fourth proportional to 240.46, 358.94 and 211.50 is: 315.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.46 : 358.94 = 211.50 : x
  2. Step 2: Convert to fraction form
    240.46/358.94 = 211.50/x
  3. Step 3: Cross multiply
    240.46x = 358.94 × 211.50
  4. Step 4: Simplify right side
    240.46x = 75,916.34
  5. Step 5: Solve for x
    x = 75,916.34/240.46
  6. Step 6: Final answer
    x = 315.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.