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Finding the Fourth Proportional to 569.46, 851.07 and 415.71

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Solution

The fourth proportional to 569.46, 851.07 and 415.71 is: 621.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.46 : 851.07 = 415.71 : x
  2. Step 2: Convert to fraction form
    569.46/851.07 = 415.71/x
  3. Step 3: Cross multiply
    569.46x = 851.07 × 415.71
  4. Step 4: Simplify right side
    569.46x = 353,798.31
  5. Step 5: Solve for x
    x = 353,798.31/569.46
  6. Step 6: Final answer
    x = 621.29

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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.