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Finding the Fourth Proportional to 550.04, 758.80 and 328.88

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Solution

The fourth proportional to 550.04, 758.80 and 328.88 is: 453.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.04 : 758.80 = 328.88 : x
  2. Step 2: Convert to fraction form
    550.04/758.80 = 328.88/x
  3. Step 3: Cross multiply
    550.04x = 758.80 × 328.88
  4. Step 4: Simplify right side
    550.04x = 249,554.14
  5. Step 5: Solve for x
    x = 249,554.14/550.04
  6. Step 6: Final answer
    x = 453.70

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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.