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Finding the Fourth Proportional to 554, 825.46 and 520.88

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Solution

The fourth proportional to 554, 825.46 and 520.88 is: 776.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    554 : 825.46 = 520.88 : x
  2. Step 2: Convert to fraction form
    554/825.46 = 520.88/x
  3. Step 3: Cross multiply
    554x = 825.46 × 520.88
  4. Step 4: Simplify right side
    554x = 429,965.60
  5. Step 5: Solve for x
    x = 429,965.60/554
  6. Step 6: Final answer
    x = 776.11

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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.