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Finding the Fourth Proportional to 554.13, 764.48 and 357.57

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Solution

The fourth proportional to 554.13, 764.48 and 357.57 is: 493.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.13 : 764.48 = 357.57 : x
  2. Step 2: Convert to fraction form
    554.13/764.48 = 357.57/x
  3. Step 3: Cross multiply
    554.13x = 764.48 × 357.57
  4. Step 4: Simplify right side
    554.13x = 273,353.33
  5. Step 5: Solve for x
    x = 273,353.33/554.13
  6. Step 6: Final answer
    x = 493.30

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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.