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Finding the Fourth Proportional to 556.02, 834.30 and 451.80

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Solution

The fourth proportional to 556.02, 834.30 and 451.80 is: 677.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.02 : 834.30 = 451.80 : x
  2. Step 2: Convert to fraction form
    556.02/834.30 = 451.80/x
  3. Step 3: Cross multiply
    556.02x = 834.30 × 451.80
  4. Step 4: Simplify right side
    556.02x = 376,936.74
  5. Step 5: Solve for x
    x = 376,936.74/556.02
  6. Step 6: Final answer
    x = 677.92

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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.