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Finding the Fourth Proportional to 368.72, 554.16 and 341.90

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Solution

The fourth proportional to 368.72, 554.16 and 341.90 is: 513.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.72 : 554.16 = 341.90 : x
  2. Step 2: Convert to fraction form
    368.72/554.16 = 341.90/x
  3. Step 3: Cross multiply
    368.72x = 554.16 × 341.90
  4. Step 4: Simplify right side
    368.72x = 189,467.30
  5. Step 5: Solve for x
    x = 189,467.30/368.72
  6. Step 6: Final answer
    x = 513.85

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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.