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Finding the Fourth Proportional to 554.16, 764.96 and 344.38

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Solution

The fourth proportional to 554.16, 764.96 and 344.38 is: 475.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.16 : 764.96 = 344.38 : x
  2. Step 2: Convert to fraction form
    554.16/764.96 = 344.38/x
  3. Step 3: Cross multiply
    554.16x = 764.96 × 344.38
  4. Step 4: Simplify right side
    554.16x = 263,436.92
  5. Step 5: Solve for x
    x = 263,436.92/554.16
  6. Step 6: Final answer
    x = 475.38

Related Problems

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Half scale
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Double scale
Find fourth proportional to 555.16, 766.34 and 345.38
Similar ratio
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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.