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Finding the Fourth Proportional to 554.76, 765.27 and 321.84

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Solution

The fourth proportional to 554.76, 765.27 and 321.84 is: 443.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.76 : 765.27 = 321.84 : x
  2. Step 2: Convert to fraction form
    554.76/765.27 = 321.84/x
  3. Step 3: Cross multiply
    554.76x = 765.27 × 321.84
  4. Step 4: Simplify right side
    554.76x = 246,294.50
  5. Step 5: Solve for x
    x = 246,294.50/554.76
  6. Step 6: Final answer
    x = 443.97

Related Problems

Find fourth proportional to 277.38, 382.64 and 160.92
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Double scale
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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.