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Finding the Fourth Proportional to 379.95, 573.10 and 357.47

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Solution

The fourth proportional to 379.95, 573.10 and 357.47 is: 539.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.95 : 573.10 = 357.47 : x
  2. Step 2: Convert to fraction form
    379.95/573.10 = 357.47/x
  3. Step 3: Cross multiply
    379.95x = 573.10 × 357.47
  4. Step 4: Simplify right side
    379.95x = 204,866.06
  5. Step 5: Solve for x
    x = 204,866.06/379.95
  6. Step 6: Final answer
    x = 539.19

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.