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Finding the Fourth Proportional to 373.60, 515.66 and 216.22

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Solution

The fourth proportional to 373.60, 515.66 and 216.22 is: 298.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.60 : 515.66 = 216.22 : x
  2. Step 2: Convert to fraction form
    373.60/515.66 = 216.22/x
  3. Step 3: Cross multiply
    373.60x = 515.66 × 216.22
  4. Step 4: Simplify right side
    373.60x = 111,496.01
  5. Step 5: Solve for x
    x = 111,496.01/373.60
  6. Step 6: Final answer
    x = 298.44

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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.