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Finding the Fourth Proportional to 471.45, 650.48 and 285.05

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Solution

The fourth proportional to 471.45, 650.48 and 285.05 is: 393.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.45 : 650.48 = 285.05 : x
  2. Step 2: Convert to fraction form
    471.45/650.48 = 285.05/x
  3. Step 3: Cross multiply
    471.45x = 650.48 × 285.05
  4. Step 4: Simplify right side
    471.45x = 185,419.32
  5. Step 5: Solve for x
    x = 185,419.32/471.45
  6. Step 6: Final answer
    x = 393.30

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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.