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Finding the Fourth Proportional to 446.64, 670.68 and 276.72

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Solution

The fourth proportional to 446.64, 670.68 and 276.72 is: 415.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.64 : 670.68 = 276.72 : x
  2. Step 2: Convert to fraction form
    446.64/670.68 = 276.72/x
  3. Step 3: Cross multiply
    446.64x = 670.68 × 276.72
  4. Step 4: Simplify right side
    446.64x = 185,590.57
  5. Step 5: Solve for x
    x = 185,590.57/446.64
  6. Step 6: Final answer
    x = 415.53

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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.