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Finding the Fourth Proportional to 471.15, 650.25 and 284.79

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Solution

The fourth proportional to 471.15, 650.25 and 284.79 is: 393.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.15 : 650.25 = 284.79 : x
  2. Step 2: Convert to fraction form
    471.15/650.25 = 284.79/x
  3. Step 3: Cross multiply
    471.15x = 650.25 × 284.79
  4. Step 4: Simplify right side
    471.15x = 185,184.70
  5. Step 5: Solve for x
    x = 185,184.70/471.15
  6. Step 6: Final answer
    x = 393.05

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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.