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Finding the Fourth Proportional to 474.58, 712.26 and 231.30

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Solution

The fourth proportional to 474.58, 712.26 and 231.30 is: 347.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.58 : 712.26 = 231.30 : x
  2. Step 2: Convert to fraction form
    474.58/712.26 = 231.30/x
  3. Step 3: Cross multiply
    474.58x = 712.26 × 231.30
  4. Step 4: Simplify right side
    474.58x = 164,745.74
  5. Step 5: Solve for x
    x = 164,745.74/474.58
  6. Step 6: Final answer
    x = 347.14

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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.