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Finding the Fourth Proportional to 554.38, 764.74 and 344.48

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Solution

The fourth proportional to 554.38, 764.74 and 344.48 is: 475.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.38 : 764.74 = 344.48 : x
  2. Step 2: Convert to fraction form
    554.38/764.74 = 344.48/x
  3. Step 3: Cross multiply
    554.38x = 764.74 × 344.48
  4. Step 4: Simplify right side
    554.38x = 263,437.64
  5. Step 5: Solve for x
    x = 263,437.64/554.38
  6. Step 6: Final answer
    x = 475.19

Related Problems

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Half scale
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Double scale
Find fourth proportional to 555.38, 766.12 and 345.48
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.