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Finding the Fourth Proportional to 572.87, 790.59 and 351.75

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Solution

The fourth proportional to 572.87, 790.59 and 351.75 is: 485.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.87 : 790.59 = 351.75 : x
  2. Step 2: Convert to fraction form
    572.87/790.59 = 351.75/x
  3. Step 3: Cross multiply
    572.87x = 790.59 × 351.75
  4. Step 4: Simplify right side
    572.87x = 278,090.03
  5. Step 5: Solve for x
    x = 278,090.03/572.87
  6. Step 6: Final answer
    x = 485.44

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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.