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Finding the Fourth Proportional to 373.92, 515.08 and 347.34

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Solution

The fourth proportional to 373.92, 515.08 and 347.34 is: 478.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.92 : 515.08 = 347.34 : x
  2. Step 2: Convert to fraction form
    373.92/515.08 = 347.34/x
  3. Step 3: Cross multiply
    373.92x = 515.08 × 347.34
  4. Step 4: Simplify right side
    373.92x = 178,907.89
  5. Step 5: Solve for x
    x = 178,907.89/373.92
  6. Step 6: Final answer
    x = 478.47

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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.