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Finding the Fourth Proportional to 554.29, 765.03 and 321.46

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Solution

The fourth proportional to 554.29, 765.03 and 321.46 is: 443.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.29 : 765.03 = 321.46 : x
  2. Step 2: Convert to fraction form
    554.29/765.03 = 321.46/x
  3. Step 3: Cross multiply
    554.29x = 765.03 × 321.46
  4. Step 4: Simplify right side
    554.29x = 245,926.54
  5. Step 5: Solve for x
    x = 245,926.54/554.29
  6. Step 6: Final answer
    x = 443.68

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.