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Finding the Fourth Proportional to 556.44, 834.70 and 145.57

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Solution

The fourth proportional to 556.44, 834.70 and 145.57 is: 218.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.44 : 834.70 = 145.57 : x
  2. Step 2: Convert to fraction form
    556.44/834.70 = 145.57/x
  3. Step 3: Cross multiply
    556.44x = 834.70 × 145.57
  4. Step 4: Simplify right side
    556.44x = 121,508.78
  5. Step 5: Solve for x
    x = 121,508.78/556.44
  6. Step 6: Final answer
    x = 218.37

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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.