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Finding the Fourth Proportional to 302.38, 452.60 and 253.69

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Solution

The fourth proportional to 302.38, 452.60 and 253.69 is: 379.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.38 : 452.60 = 253.69 : x
  2. Step 2: Convert to fraction form
    302.38/452.60 = 253.69/x
  3. Step 3: Cross multiply
    302.38x = 452.60 × 253.69
  4. Step 4: Simplify right side
    302.38x = 114,820.09
  5. Step 5: Solve for x
    x = 114,820.09/302.38
  6. Step 6: Final answer
    x = 379.72

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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.