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Finding the Fourth Proportional to 364.20, 502.62 and 253.68

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Solution

The fourth proportional to 364.20, 502.62 and 253.68 is: 350.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.20 : 502.62 = 253.68 : x
  2. Step 2: Convert to fraction form
    364.20/502.62 = 253.68/x
  3. Step 3: Cross multiply
    364.20x = 502.62 × 253.68
  4. Step 4: Simplify right side
    364.20x = 127,504.64
  5. Step 5: Solve for x
    x = 127,504.64/364.20
  6. Step 6: Final answer
    x = 350.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.