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Finding the Fourth Proportional to 550.51, 760.03 and 411.39

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Solution

The fourth proportional to 550.51, 760.03 and 411.39 is: 567.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.51 : 760.03 = 411.39 : x
  2. Step 2: Convert to fraction form
    550.51/760.03 = 411.39/x
  3. Step 3: Cross multiply
    550.51x = 760.03 × 411.39
  4. Step 4: Simplify right side
    550.51x = 312,667.71
  5. Step 5: Solve for x
    x = 312,667.71/550.51
  6. Step 6: Final answer
    x = 567.96

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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.