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Finding the Fourth Proportional to 572.06, 789.45 and 310.08

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Solution

The fourth proportional to 572.06, 789.45 and 310.08 is: 427.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.06 : 789.45 = 310.08 : x
  2. Step 2: Convert to fraction form
    572.06/789.45 = 310.08/x
  3. Step 3: Cross multiply
    572.06x = 789.45 × 310.08
  4. Step 4: Simplify right side
    572.06x = 244,790.01
  5. Step 5: Solve for x
    x = 244,790.01/572.06
  6. Step 6: Final answer
    x = 427.91

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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.