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Finding the Fourth Proportional to 368.08, 552.30 and 221.87

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Solution

The fourth proportional to 368.08, 552.30 and 221.87 is: 332.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.08 : 552.30 = 221.87 : x
  2. Step 2: Convert to fraction form
    368.08/552.30 = 221.87/x
  3. Step 3: Cross multiply
    368.08x = 552.30 × 221.87
  4. Step 4: Simplify right side
    368.08x = 122,538.80
  5. Step 5: Solve for x
    x = 122,538.80/368.08
  6. Step 6: Final answer
    x = 332.91

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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.