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Finding the Fourth Proportional to 1,329.64, 1,993.68 and 549.04

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Solution

The fourth proportional to 1,329.64, 1,993.68 and 549.04 is: 823.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329.64 : 1,993.68 = 549.04 : x
  2. Step 2: Convert to fraction form
    1,329.64/1,993.68 = 549.04/x
  3. Step 3: Cross multiply
    1,329.64x = 1,993.68 × 549.04
  4. Step 4: Simplify right side
    1,329.64x = 1,094,610.07
  5. Step 5: Solve for x
    x = 1,094,610.07/1,329.64
  6. Step 6: Final answer
    x = 823.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.