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Finding the Fourth Proportional to 416.66, 575.07 and 285.86

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Solution

The fourth proportional to 416.66, 575.07 and 285.86 is: 394.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.66 : 575.07 = 285.86 : x
  2. Step 2: Convert to fraction form
    416.66/575.07 = 285.86/x
  3. Step 3: Cross multiply
    416.66x = 575.07 × 285.86
  4. Step 4: Simplify right side
    416.66x = 164,389.51
  5. Step 5: Solve for x
    x = 164,389.51/416.66
  6. Step 6: Final answer
    x = 394.54

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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.