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Finding the Fourth Proportional to 578.26, 798.11 and 403.50

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Solution

The fourth proportional to 578.26, 798.11 and 403.50 is: 556.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.26 : 798.11 = 403.50 : x
  2. Step 2: Convert to fraction form
    578.26/798.11 = 403.50/x
  3. Step 3: Cross multiply
    578.26x = 798.11 × 403.50
  4. Step 4: Simplify right side
    578.26x = 322,038.39
  5. Step 5: Solve for x
    x = 322,038.39/578.26
  6. Step 6: Final answer
    x = 556.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.