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Finding the Fourth Proportional to 573.81, 860.78 and 249.40

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Solution

The fourth proportional to 573.81, 860.78 and 249.40 is: 374.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.81 : 860.78 = 249.40 : x
  2. Step 2: Convert to fraction form
    573.81/860.78 = 249.40/x
  3. Step 3: Cross multiply
    573.81x = 860.78 × 249.40
  4. Step 4: Simplify right side
    573.81x = 214,678.53
  5. Step 5: Solve for x
    x = 214,678.53/573.81
  6. Step 6: Final answer
    x = 374.13

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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.