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Finding the Fourth Proportional to 471.69, 650.71 and 285.06

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Solution

The fourth proportional to 471.69, 650.71 and 285.06 is: 393.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.69 : 650.71 = 285.06 : x
  2. Step 2: Convert to fraction form
    471.69/650.71 = 285.06/x
  3. Step 3: Cross multiply
    471.69x = 650.71 × 285.06
  4. Step 4: Simplify right side
    471.69x = 185,491.39
  5. Step 5: Solve for x
    x = 185,491.39/471.69
  6. Step 6: Final answer
    x = 393.25

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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.