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Finding the Fourth Proportional to 446.88, 670.32 and 400.80

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Solution

The fourth proportional to 446.88, 670.32 and 400.80 is: 601.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.88 : 670.32 = 400.80 : x
  2. Step 2: Convert to fraction form
    446.88/670.32 = 400.80/x
  3. Step 3: Cross multiply
    446.88x = 670.32 × 400.80
  4. Step 4: Simplify right side
    446.88x = 268,664.26
  5. Step 5: Solve for x
    x = 268,664.26/446.88
  6. Step 6: Final answer
    x = 601.20

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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.