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Finding the Fourth Proportional to 553.21, 829.89 and 264.64

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Solution

The fourth proportional to 553.21, 829.89 and 264.64 is: 397.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.21 : 829.89 = 264.64 : x
  2. Step 2: Convert to fraction form
    553.21/829.89 = 264.64/x
  3. Step 3: Cross multiply
    553.21x = 829.89 × 264.64
  4. Step 4: Simplify right side
    553.21x = 219,622.09
  5. Step 5: Solve for x
    x = 219,622.09/553.21
  6. Step 6: Final answer
    x = 397.00

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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.