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Finding the Fourth Proportional to 554.45, 764.64 and 357.75

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Solution

The fourth proportional to 554.45, 764.64 and 357.75 is: 493.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.45 : 764.64 = 357.75 : x
  2. Step 2: Convert to fraction form
    554.45/764.64 = 357.75/x
  3. Step 3: Cross multiply
    554.45x = 764.64 × 357.75
  4. Step 4: Simplify right side
    554.45x = 273,549.96
  5. Step 5: Solve for x
    x = 273,549.96/554.45
  6. Step 6: Final answer
    x = 493.38

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.