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Finding the Fourth Proportional to 554.38, 764.98 and 344.25

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Solution

The fourth proportional to 554.38, 764.98 and 344.25 is: 475.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.38 : 764.98 = 344.25 : x
  2. Step 2: Convert to fraction form
    554.38/764.98 = 344.25/x
  3. Step 3: Cross multiply
    554.38x = 764.98 × 344.25
  4. Step 4: Simplify right side
    554.38x = 263,343.50
  5. Step 5: Solve for x
    x = 263,343.50/554.38
  6. Step 6: Final answer
    x = 475.03

Related Problems

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Double scale
Find fourth proportional to 555.38, 766.36 and 345.25
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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.