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Finding the Fourth Proportional to 353.74, 530.96 and 217.06

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Solution

The fourth proportional to 353.74, 530.96 and 217.06 is: 325.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.74 : 530.96 = 217.06 : x
  2. Step 2: Convert to fraction form
    353.74/530.96 = 217.06/x
  3. Step 3: Cross multiply
    353.74x = 530.96 × 217.06
  4. Step 4: Simplify right side
    353.74x = 115,250.18
  5. Step 5: Solve for x
    x = 115,250.18/353.74
  6. Step 6: Final answer
    x = 325.80

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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.