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Finding the Fourth Proportional to 574.55, 790.83 and 480.26

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Solution

The fourth proportional to 574.55, 790.83 and 480.26 is: 661.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.55 : 790.83 = 480.26 : x
  2. Step 2: Convert to fraction form
    574.55/790.83 = 480.26/x
  3. Step 3: Cross multiply
    574.55x = 790.83 × 480.26
  4. Step 4: Simplify right side
    574.55x = 379,800.06
  5. Step 5: Solve for x
    x = 379,800.06/574.55
  6. Step 6: Final answer
    x = 661.04

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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.