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Finding the Fourth Proportional to 570.47, 851.22 and 535.64

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Solution

The fourth proportional to 570.47, 851.22 and 535.64 is: 799.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.47 : 851.22 = 535.64 : x
  2. Step 2: Convert to fraction form
    570.47/851.22 = 535.64/x
  3. Step 3: Cross multiply
    570.47x = 851.22 × 535.64
  4. Step 4: Simplify right side
    570.47x = 455,943.22
  5. Step 5: Solve for x
    x = 455,943.22/570.47
  6. Step 6: Final answer
    x = 799.25

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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.