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Finding the Fourth Proportional to 368.23, 508.44 and 285.61

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Solution

The fourth proportional to 368.23, 508.44 and 285.61 is: 394.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.23 : 508.44 = 285.61 : x
  2. Step 2: Convert to fraction form
    368.23/508.44 = 285.61/x
  3. Step 3: Cross multiply
    368.23x = 508.44 × 285.61
  4. Step 4: Simplify right side
    368.23x = 145,215.55
  5. Step 5: Solve for x
    x = 145,215.55/368.23
  6. Step 6: Final answer
    x = 394.36

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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.