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Finding the Fourth Proportional to 554.32, 764.92 and 357.92

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Solution

The fourth proportional to 554.32, 764.92 and 357.92 is: 493.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.32 : 764.92 = 357.92 : x
  2. Step 2: Convert to fraction form
    554.32/764.92 = 357.92/x
  3. Step 3: Cross multiply
    554.32x = 764.92 × 357.92
  4. Step 4: Simplify right side
    554.32x = 273,780.17
  5. Step 5: Solve for x
    x = 273,780.17/554.32
  6. Step 6: Final answer
    x = 493.90

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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.