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Finding the Fourth Proportional to 557, 834.74 and 453.12

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Solution

The fourth proportional to 557, 834.74 and 453.12 is: 679.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    557 : 834.74 = 453.12 : x
  2. Step 2: Convert to fraction form
    557/834.74 = 453.12/x
  3. Step 3: Cross multiply
    557x = 834.74 × 453.12
  4. Step 4: Simplify right side
    557x = 378,237.39
  5. Step 5: Solve for x
    x = 378,237.39/557
  6. Step 6: Final answer
    x = 679.06

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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.