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Finding the Fourth Proportional to 353.73, 530.17 and 207.55

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Solution

The fourth proportional to 353.73, 530.17 and 207.55 is: 311.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.73 : 530.17 = 207.55 : x
  2. Step 2: Convert to fraction form
    353.73/530.17 = 207.55/x
  3. Step 3: Cross multiply
    353.73x = 530.17 × 207.55
  4. Step 4: Simplify right side
    353.73x = 110,034.53
  5. Step 5: Solve for x
    x = 110,034.53/353.73
  6. Step 6: Final answer
    x = 311.07

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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.