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Finding the Fourth Proportional to 525.44, 786.54 and 447.68

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Solution

The fourth proportional to 525.44, 786.54 and 447.68 is: 670.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.44 : 786.54 = 447.68 : x
  2. Step 2: Convert to fraction form
    525.44/786.54 = 447.68/x
  3. Step 3: Cross multiply
    525.44x = 786.54 × 447.68
  4. Step 4: Simplify right side
    525.44x = 352,118.23
  5. Step 5: Solve for x
    x = 352,118.23/525.44
  6. Step 6: Final answer
    x = 670.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.