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Finding the Fourth Proportional to 550.80, 820.53 and 533.79

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Solution

The fourth proportional to 550.80, 820.53 and 533.79 is: 795.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.80 : 820.53 = 533.79 : x
  2. Step 2: Convert to fraction form
    550.80/820.53 = 533.79/x
  3. Step 3: Cross multiply
    550.80x = 820.53 × 533.79
  4. Step 4: Simplify right side
    550.80x = 437,990.71
  5. Step 5: Solve for x
    x = 437,990.71/550.80
  6. Step 6: Final answer
    x = 795.19

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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.