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Finding the Fourth Proportional to 368.30, 554.50 and 325.22

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Solution

The fourth proportional to 368.30, 554.50 and 325.22 is: 489.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.30 : 554.50 = 325.22 : x
  2. Step 2: Convert to fraction form
    368.30/554.50 = 325.22/x
  3. Step 3: Cross multiply
    368.30x = 554.50 × 325.22
  4. Step 4: Simplify right side
    368.30x = 180,330.29
  5. Step 5: Solve for x
    x = 180,330.29/368.30
  6. Step 6: Final answer
    x = 489.63

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.