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Finding the Fourth Proportional to 480.70, 664.22 and 376.05

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Solution

The fourth proportional to 480.70, 664.22 and 376.05 is: 519.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.70 : 664.22 = 376.05 : x
  2. Step 2: Convert to fraction form
    480.70/664.22 = 376.05/x
  3. Step 3: Cross multiply
    480.70x = 664.22 × 376.05
  4. Step 4: Simplify right side
    480.70x = 249,779.93
  5. Step 5: Solve for x
    x = 249,779.93/480.70
  6. Step 6: Final answer
    x = 519.62

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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.