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Finding the Fourth Proportional to 480.05, 662.60 and 283.62

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Solution

The fourth proportional to 480.05, 662.60 and 283.62 is: 391.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.05 : 662.60 = 283.62 : x
  2. Step 2: Convert to fraction form
    480.05/662.60 = 283.62/x
  3. Step 3: Cross multiply
    480.05x = 662.60 × 283.62
  4. Step 4: Simplify right side
    480.05x = 187,925.19
  5. Step 5: Solve for x
    x = 187,925.19/480.05
  6. Step 6: Final answer
    x = 391.47

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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.