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Finding the Fourth Proportional to 368.67, 553.17 and 338.60

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Solution

The fourth proportional to 368.67, 553.17 and 338.60 is: 508.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.67 : 553.17 = 338.60 : x
  2. Step 2: Convert to fraction form
    368.67/553.17 = 338.60/x
  3. Step 3: Cross multiply
    368.67x = 553.17 × 338.60
  4. Step 4: Simplify right side
    368.67x = 187,303.36
  5. Step 5: Solve for x
    x = 187,303.36/368.67
  6. Step 6: Final answer
    x = 508.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.