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Finding the Fourth Proportional to 550.02, 758.75 and 328.91

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Solution

The fourth proportional to 550.02, 758.75 and 328.91 is: 453.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.02 : 758.75 = 328.91 : x
  2. Step 2: Convert to fraction form
    550.02/758.75 = 328.91/x
  3. Step 3: Cross multiply
    550.02x = 758.75 × 328.91
  4. Step 4: Simplify right side
    550.02x = 249,563.18
  5. Step 5: Solve for x
    x = 249,563.18/550.02
  6. Step 6: Final answer
    x = 453.73

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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.