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Finding the Fourth Proportional to 576.26, 795.48 and 390.41

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Solution

The fourth proportional to 576.26, 795.48 and 390.41 is: 538.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.26 : 795.48 = 390.41 : x
  2. Step 2: Convert to fraction form
    576.26/795.48 = 390.41/x
  3. Step 3: Cross multiply
    576.26x = 795.48 × 390.41
  4. Step 4: Simplify right side
    576.26x = 310,563.35
  5. Step 5: Solve for x
    x = 310,563.35/576.26
  6. Step 6: Final answer
    x = 538.93

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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.