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Finding the Fourth Proportional to 554.37, 764.55 and 471.75

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Solution

The fourth proportional to 554.37, 764.55 and 471.75 is: 650.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.37 : 764.55 = 471.75 : x
  2. Step 2: Convert to fraction form
    554.37/764.55 = 471.75/x
  3. Step 3: Cross multiply
    554.37x = 764.55 × 471.75
  4. Step 4: Simplify right side
    554.37x = 360,676.46
  5. Step 5: Solve for x
    x = 360,676.46/554.37
  6. Step 6: Final answer
    x = 650.61

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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.