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Finding the Fourth Proportional to 368.92, 508.14 and 286.02

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Solution

The fourth proportional to 368.92, 508.14 and 286.02 is: 393.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.92 : 508.14 = 286.02 : x
  2. Step 2: Convert to fraction form
    368.92/508.14 = 286.02/x
  3. Step 3: Cross multiply
    368.92x = 508.14 × 286.02
  4. Step 4: Simplify right side
    368.92x = 145,338.20
  5. Step 5: Solve for x
    x = 145,338.20/368.92
  6. Step 6: Final answer
    x = 393.96

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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.