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Finding the Fourth Proportional to 553.69, 825.95 and 461.35

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Solution

The fourth proportional to 553.69, 825.95 and 461.35 is: 688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.69 : 825.95 = 461.35 : x
  2. Step 2: Convert to fraction form
    553.69/825.95 = 461.35/x
  3. Step 3: Cross multiply
    553.69x = 825.95 × 461.35
  4. Step 4: Simplify right side
    553.69x = 381,052.03
  5. Step 5: Solve for x
    x = 381,052.03/553.69
  6. Step 6: Final answer
    x = 688.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.