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Finding the Fourth Proportional to 550.57, 760.15 and 351.51

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Solution

The fourth proportional to 550.57, 760.15 and 351.51 is: 485.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.57 : 760.15 = 351.51 : x
  2. Step 2: Convert to fraction form
    550.57/760.15 = 351.51/x
  3. Step 3: Cross multiply
    550.57x = 760.15 × 351.51
  4. Step 4: Simplify right side
    550.57x = 267,196.53
  5. Step 5: Solve for x
    x = 267,196.53/550.57
  6. Step 6: Final answer
    x = 485.31

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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.