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Finding the Fourth Proportional to 575.34, 863.49 and 286.98

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Solution

The fourth proportional to 575.34, 863.49 and 286.98 is: 430.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.34 : 863.49 = 286.98 : x
  2. Step 2: Convert to fraction form
    575.34/863.49 = 286.98/x
  3. Step 3: Cross multiply
    575.34x = 863.49 × 286.98
  4. Step 4: Simplify right side
    575.34x = 247,804.36
  5. Step 5: Solve for x
    x = 247,804.36/575.34
  6. Step 6: Final answer
    x = 430.71

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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.