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Finding the Fourth Proportional to 554.45, 764.87 and 365.66

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Solution

The fourth proportional to 554.45, 764.87 and 365.66 is: 504.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.45 : 764.87 = 365.66 : x
  2. Step 2: Convert to fraction form
    554.45/764.87 = 365.66/x
  3. Step 3: Cross multiply
    554.45x = 764.87 × 365.66
  4. Step 4: Simplify right side
    554.45x = 279,680.54
  5. Step 5: Solve for x
    x = 279,680.54/554.45
  6. Step 6: Final answer
    x = 504.43

Related Problems

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Double scale
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1.5x scale

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.