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Finding the Fourth Proportional to 554.82, 765.53 and 321.81

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Solution

The fourth proportional to 554.82, 765.53 and 321.81 is: 444.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.82 : 765.53 = 321.81 : x
  2. Step 2: Convert to fraction form
    554.82/765.53 = 321.81/x
  3. Step 3: Cross multiply
    554.82x = 765.53 × 321.81
  4. Step 4: Simplify right side
    554.82x = 246,355.21
  5. Step 5: Solve for x
    x = 246,355.21/554.82
  6. Step 6: Final answer
    x = 444.03

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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.