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Finding the Fourth Proportional to 550.20, 824.10 and 442.20

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Solution

The fourth proportional to 550.20, 824.10 and 442.20 is: 662.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.20 : 824.10 = 442.20 : x
  2. Step 2: Convert to fraction form
    550.20/824.10 = 442.20/x
  3. Step 3: Cross multiply
    550.20x = 824.10 × 442.20
  4. Step 4: Simplify right side
    550.20x = 364,417.02
  5. Step 5: Solve for x
    x = 364,417.02/550.20
  6. Step 6: Final answer
    x = 662.34

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1.5x scale

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.