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Finding the Fourth Proportional to 554.75, 765.56 and 321.89

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Solution

The fourth proportional to 554.75, 765.56 and 321.89 is: 444.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.75 : 765.56 = 321.89 : x
  2. Step 2: Convert to fraction form
    554.75/765.56 = 321.89/x
  3. Step 3: Cross multiply
    554.75x = 765.56 × 321.89
  4. Step 4: Simplify right side
    554.75x = 246,426.11
  5. Step 5: Solve for x
    x = 246,426.11/554.75
  6. Step 6: Final answer
    x = 444.21

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Find fourth proportional to 277.38, 382.78 and 160.95
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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.