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Finding the Fourth Proportional to 576.05, 795.20 and 355.05

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Solution

The fourth proportional to 576.05, 795.20 and 355.05 is: 490.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.05 : 795.20 = 355.05 : x
  2. Step 2: Convert to fraction form
    576.05/795.20 = 355.05/x
  3. Step 3: Cross multiply
    576.05x = 795.20 × 355.05
  4. Step 4: Simplify right side
    576.05x = 282,333.98
  5. Step 5: Solve for x
    x = 282,333.98/576.05
  6. Step 6: Final answer
    x = 490.12

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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.