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Finding the Fourth Proportional to 554.22, 765.42 and 484.02

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Solution

The fourth proportional to 554.22, 765.42 and 484.02 is: 668.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.22 : 765.42 = 484.02 : x
  2. Step 2: Convert to fraction form
    554.22/765.42 = 484.02/x
  3. Step 3: Cross multiply
    554.22x = 765.42 × 484.02
  4. Step 4: Simplify right side
    554.22x = 370,478.59
  5. Step 5: Solve for x
    x = 370,478.59/554.22
  6. Step 6: Final answer
    x = 668.47

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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.