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Finding the Fourth Proportional to 373.94, 515.98 and 208.15

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Solution

The fourth proportional to 373.94, 515.98 and 208.15 is: 287.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.94 : 515.98 = 208.15 : x
  2. Step 2: Convert to fraction form
    373.94/515.98 = 208.15/x
  3. Step 3: Cross multiply
    373.94x = 515.98 × 208.15
  4. Step 4: Simplify right side
    373.94x = 107,402.52
  5. Step 5: Solve for x
    x = 107,402.52/373.94
  6. Step 6: Final answer
    x = 287.22

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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.