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Finding the Fourth Proportional to 677.50, 1,014.63 and 579.43

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Solution

The fourth proportional to 677.50, 1,014.63 and 579.43 is: 867.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.50 : 1,014.63 = 579.43 : x
  2. Step 2: Convert to fraction form
    677.50/1,014.63 = 579.43/x
  3. Step 3: Cross multiply
    677.50x = 1,014.63 × 579.43
  4. Step 4: Simplify right side
    677.50x = 587,907.06
  5. Step 5: Solve for x
    x = 587,907.06/677.50
  6. Step 6: Final answer
    x = 867.76

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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.