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Finding the Fourth Proportional to 576.04, 793.90 and 420.52

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Solution

The fourth proportional to 576.04, 793.90 and 420.52 is: 579.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.04 : 793.90 = 420.52 : x
  2. Step 2: Convert to fraction form
    576.04/793.90 = 420.52/x
  3. Step 3: Cross multiply
    576.04x = 793.90 × 420.52
  4. Step 4: Simplify right side
    576.04x = 333,850.83
  5. Step 5: Solve for x
    x = 333,850.83/576.04
  6. Step 6: Final answer
    x = 579.56

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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.