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Finding the Fourth Proportional to 570.37, 851.50 and 550.12

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Solution

The fourth proportional to 570.37, 851.50 and 550.12 is: 821.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.37 : 851.50 = 550.12 : x
  2. Step 2: Convert to fraction form
    570.37/851.50 = 550.12/x
  3. Step 3: Cross multiply
    570.37x = 851.50 × 550.12
  4. Step 4: Simplify right side
    570.37x = 468,420.86
  5. Step 5: Solve for x
    x = 468,420.86/570.37
  6. Step 6: Final answer
    x = 821.27

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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.