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Finding the Fourth Proportional to 482.68, 668.81 and 476.44

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Solution

The fourth proportional to 482.68, 668.81 and 476.44 is: 660.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.68 : 668.81 = 476.44 : x
  2. Step 2: Convert to fraction form
    482.68/668.81 = 476.44/x
  3. Step 3: Cross multiply
    482.68x = 668.81 × 476.44
  4. Step 4: Simplify right side
    482.68x = 318,647.84
  5. Step 5: Solve for x
    x = 318,647.84/482.68
  6. Step 6: Final answer
    x = 660.16

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.