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Finding the Fourth Proportional to 572.45, 790.01 and 351.63

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Solution

The fourth proportional to 572.45, 790.01 and 351.63 is: 485.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.45 : 790.01 = 351.63 : x
  2. Step 2: Convert to fraction form
    572.45/790.01 = 351.63/x
  3. Step 3: Cross multiply
    572.45x = 790.01 × 351.63
  4. Step 4: Simplify right side
    572.45x = 277,789.46
  5. Step 5: Solve for x
    x = 277,789.46/572.45
  6. Step 6: Final answer
    x = 485.27

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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.