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Finding the Fourth Proportional to 373.30, 515.18 and 207.55

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Solution

The fourth proportional to 373.30, 515.18 and 207.55 is: 286.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.30 : 515.18 = 207.55 : x
  2. Step 2: Convert to fraction form
    373.30/515.18 = 207.55/x
  3. Step 3: Cross multiply
    373.30x = 515.18 × 207.55
  4. Step 4: Simplify right side
    373.30x = 106,926.77
  5. Step 5: Solve for x
    x = 106,926.77/373.30
  6. Step 6: Final answer
    x = 286.44

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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.