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Finding the Fourth Proportional to 572.83, 790.51 and 310.85

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Solution

The fourth proportional to 572.83, 790.51 and 310.85 is: 428.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.83 : 790.51 = 310.85 : x
  2. Step 2: Convert to fraction form
    572.83/790.51 = 310.85/x
  3. Step 3: Cross multiply
    572.83x = 790.51 × 310.85
  4. Step 4: Simplify right side
    572.83x = 245,724.53
  5. Step 5: Solve for x
    x = 245,724.53/572.83
  6. Step 6: Final answer
    x = 428.97

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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.