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Finding the Fourth Proportional to 550.50, 760.10 and 403.35

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Solution

The fourth proportional to 550.50, 760.10 and 403.35 is: 556.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.50 : 760.10 = 403.35 : x
  2. Step 2: Convert to fraction form
    550.50/760.10 = 403.35/x
  3. Step 3: Cross multiply
    550.50x = 760.10 × 403.35
  4. Step 4: Simplify right side
    550.50x = 306,584.32
  5. Step 5: Solve for x
    x = 306,584.32/550.50
  6. Step 6: Final answer
    x = 556.92

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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.