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Finding the Fourth Proportional to 549.36, 758.24 and 328.44

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Solution

The fourth proportional to 549.36, 758.24 and 328.44 is: 453.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.36 : 758.24 = 328.44 : x
  2. Step 2: Convert to fraction form
    549.36/758.24 = 328.44/x
  3. Step 3: Cross multiply
    549.36x = 758.24 × 328.44
  4. Step 4: Simplify right side
    549.36x = 249,036.35
  5. Step 5: Solve for x
    x = 249,036.35/549.36
  6. Step 6: Final answer
    x = 453.32

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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.