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Finding the Fourth Proportional to 368.79, 554.10 and 323.22

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Solution

The fourth proportional to 368.79, 554.10 and 323.22 is: 485.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.79 : 554.10 = 323.22 : x
  2. Step 2: Convert to fraction form
    368.79/554.10 = 323.22/x
  3. Step 3: Cross multiply
    368.79x = 554.10 × 323.22
  4. Step 4: Simplify right side
    368.79x = 179,096.20
  5. Step 5: Solve for x
    x = 179,096.20/368.79
  6. Step 6: Final answer
    x = 485.63

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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.