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Finding the Fourth Proportional to 434.84, 651.68 and 217.94

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Solution

The fourth proportional to 434.84, 651.68 and 217.94 is: 326.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.84 : 651.68 = 217.94 : x
  2. Step 2: Convert to fraction form
    434.84/651.68 = 217.94/x
  3. Step 3: Cross multiply
    434.84x = 651.68 × 217.94
  4. Step 4: Simplify right side
    434.84x = 142,027.14
  5. Step 5: Solve for x
    x = 142,027.14/434.84
  6. Step 6: Final answer
    x = 326.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.