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Finding the Fourth Proportional to 553.10, 825.70 and 533.89

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Solution

The fourth proportional to 553.10, 825.70 and 533.89 is: 797.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.10 : 825.70 = 533.89 : x
  2. Step 2: Convert to fraction form
    553.10/825.70 = 533.89/x
  3. Step 3: Cross multiply
    553.10x = 825.70 × 533.89
  4. Step 4: Simplify right side
    553.10x = 440,829.57
  5. Step 5: Solve for x
    x = 440,829.57/553.10
  6. Step 6: Final answer
    x = 797.01

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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.