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Finding the Fourth Proportional to 446.60, 670.11 and 215.48

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Solution

The fourth proportional to 446.60, 670.11 and 215.48 is: 323.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.60 : 670.11 = 215.48 : x
  2. Step 2: Convert to fraction form
    446.60/670.11 = 215.48/x
  3. Step 3: Cross multiply
    446.60x = 670.11 × 215.48
  4. Step 4: Simplify right side
    446.60x = 144,395.30
  5. Step 5: Solve for x
    x = 144,395.30/446.60
  6. Step 6: Final answer
    x = 323.32

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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.