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Finding the Fourth Proportional to 364.26, 502.88 and 285.63

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Solution

The fourth proportional to 364.26, 502.88 and 285.63 is: 394.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.26 : 502.88 = 285.63 : x
  2. Step 2: Convert to fraction form
    364.26/502.88 = 285.63/x
  3. Step 3: Cross multiply
    364.26x = 502.88 × 285.63
  4. Step 4: Simplify right side
    364.26x = 143,636.19
  5. Step 5: Solve for x
    x = 143,636.19/364.26
  6. Step 6: Final answer
    x = 394.32

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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.