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Finding the Fourth Proportional to 416.88, 575.46 and 319.14

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Solution

The fourth proportional to 416.88, 575.46 and 319.14 is: 440.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.88 : 575.46 = 319.14 : x
  2. Step 2: Convert to fraction form
    416.88/575.46 = 319.14/x
  3. Step 3: Cross multiply
    416.88x = 575.46 × 319.14
  4. Step 4: Simplify right side
    416.88x = 183,652.30
  5. Step 5: Solve for x
    x = 183,652.30/416.88
  6. Step 6: Final answer
    x = 440.54

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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.