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Finding the Fourth Proportional to 570.39, 851.11 and 535.56

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Solution

The fourth proportional to 570.39, 851.11 and 535.56 is: 799.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.39 : 851.11 = 535.56 : x
  2. Step 2: Convert to fraction form
    570.39/851.11 = 535.56/x
  3. Step 3: Cross multiply
    570.39x = 851.11 × 535.56
  4. Step 4: Simplify right side
    570.39x = 455,820.47
  5. Step 5: Solve for x
    x = 455,820.47/570.39
  6. Step 6: Final answer
    x = 799.14

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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.