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Finding the Fourth Proportional to 574.07, 860.64 and 265.76

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Solution

The fourth proportional to 574.07, 860.64 and 265.76 is: 398.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.07 : 860.64 = 265.76 : x
  2. Step 2: Convert to fraction form
    574.07/860.64 = 265.76/x
  3. Step 3: Cross multiply
    574.07x = 860.64 × 265.76
  4. Step 4: Simplify right side
    574.07x = 228,723.69
  5. Step 5: Solve for x
    x = 228,723.69/574.07
  6. Step 6: Final answer
    x = 398.42

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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.