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Finding the Fourth Proportional to 476.40, 657.20 and 301.62

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Solution

The fourth proportional to 476.40, 657.20 and 301.62 is: 416.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.40 : 657.20 = 301.62 : x
  2. Step 2: Convert to fraction form
    476.40/657.20 = 301.62/x
  3. Step 3: Cross multiply
    476.40x = 657.20 × 301.62
  4. Step 4: Simplify right side
    476.40x = 198,224.66
  5. Step 5: Solve for x
    x = 198,224.66/476.40
  6. Step 6: Final answer
    x = 416.09

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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.