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Finding the Fourth Proportional to 416.56, 574.90 and 259.30

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Solution

The fourth proportional to 416.56, 574.90 and 259.30 is: 357.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.56 : 574.90 = 259.30 : x
  2. Step 2: Convert to fraction form
    416.56/574.90 = 259.30/x
  3. Step 3: Cross multiply
    416.56x = 574.90 × 259.30
  4. Step 4: Simplify right side
    416.56x = 149,071.57
  5. Step 5: Solve for x
    x = 149,071.57/416.56
  6. Step 6: Final answer
    x = 357.86

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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.