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Finding the Fourth Proportional to 364.21, 502.65 and 208.96

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Solution

The fourth proportional to 364.21, 502.65 and 208.96 is: 288.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.21 : 502.65 = 208.96 : x
  2. Step 2: Convert to fraction form
    364.21/502.65 = 208.96/x
  3. Step 3: Cross multiply
    364.21x = 502.65 × 208.96
  4. Step 4: Simplify right side
    364.21x = 105,033.74
  5. Step 5: Solve for x
    x = 105,033.74/364.21
  6. Step 6: Final answer
    x = 288.39

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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.