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Finding the Fourth Proportional to 416.58, 575.55 and 355.06

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Solution

The fourth proportional to 416.58, 575.55 and 355.06 is: 490.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.58 : 575.55 = 355.06 : x
  2. Step 2: Convert to fraction form
    416.58/575.55 = 355.06/x
  3. Step 3: Cross multiply
    416.58x = 575.55 × 355.06
  4. Step 4: Simplify right side
    416.58x = 204,354.78
  5. Step 5: Solve for x
    x = 204,354.78/416.58
  6. Step 6: Final answer
    x = 490.55

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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.