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Finding the Fourth Proportional to 373.47, 515.39 and 207.68

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Solution

The fourth proportional to 373.47, 515.39 and 207.68 is: 286.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.47 : 515.39 = 207.68 : x
  2. Step 2: Convert to fraction form
    373.47/515.39 = 207.68/x
  3. Step 3: Cross multiply
    373.47x = 515.39 × 207.68
  4. Step 4: Simplify right side
    373.47x = 107,032.58
  5. Step 5: Solve for x
    x = 107,032.58/373.47
  6. Step 6: Final answer
    x = 286.59

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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.