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Finding the Fourth Proportional to 556.94, 834.96 and 419.72

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Solution

The fourth proportional to 556.94, 834.96 and 419.72 is: 629.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.94 : 834.96 = 419.72 : x
  2. Step 2: Convert to fraction form
    556.94/834.96 = 419.72/x
  3. Step 3: Cross multiply
    556.94x = 834.96 × 419.72
  4. Step 4: Simplify right side
    556.94x = 350,449.41
  5. Step 5: Solve for x
    x = 350,449.41/556.94
  6. Step 6: Final answer
    x = 629.24

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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.