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Finding the Fourth Proportional to 550.51, 760.20 and 354.36

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Solution

The fourth proportional to 550.51, 760.20 and 354.36 is: 489.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.51 : 760.20 = 354.36 : x
  2. Step 2: Convert to fraction form
    550.51/760.20 = 354.36/x
  3. Step 3: Cross multiply
    550.51x = 760.20 × 354.36
  4. Step 4: Simplify right side
    550.51x = 269,384.47
  5. Step 5: Solve for x
    x = 269,384.47/550.51
  6. Step 6: Final answer
    x = 489.34

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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.