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Finding the Fourth Proportional to 416.22, 574.16 and 291.60

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Solution

The fourth proportional to 416.22, 574.16 and 291.60 is: 402.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.22 : 574.16 = 291.60 : x
  2. Step 2: Convert to fraction form
    416.22/574.16 = 291.60/x
  3. Step 3: Cross multiply
    416.22x = 574.16 × 291.60
  4. Step 4: Simplify right side
    416.22x = 167,423.60
  5. Step 5: Solve for x
    x = 167,423.60/416.22
  6. Step 6: Final answer
    x = 402.25

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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.