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Finding the Fourth Proportional to 574.95, 862.86 and 355.74

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Solution

The fourth proportional to 574.95, 862.86 and 355.74 is: 533.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.95 : 862.86 = 355.74 : x
  2. Step 2: Convert to fraction form
    574.95/862.86 = 355.74/x
  3. Step 3: Cross multiply
    574.95x = 862.86 × 355.74
  4. Step 4: Simplify right side
    574.95x = 306,953.82
  5. Step 5: Solve for x
    x = 306,953.82/574.95
  6. Step 6: Final answer
    x = 533.88

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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.