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Finding the Fourth Proportional to 500.34, 749.30 and 253.22

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Solution

The fourth proportional to 500.34, 749.30 and 253.22 is: 379.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.34 : 749.30 = 253.22 : x
  2. Step 2: Convert to fraction form
    500.34/749.30 = 253.22/x
  3. Step 3: Cross multiply
    500.34x = 749.30 × 253.22
  4. Step 4: Simplify right side
    500.34x = 189,732.73
  5. Step 5: Solve for x
    x = 189,732.73/500.34
  6. Step 6: Final answer
    x = 379.21

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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.