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Finding the Fourth Proportional to 373.59, 515.33 and 347.40

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Solution

The fourth proportional to 373.59, 515.33 and 347.40 is: 479.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.59 : 515.33 = 347.40 : x
  2. Step 2: Convert to fraction form
    373.59/515.33 = 347.40/x
  3. Step 3: Cross multiply
    373.59x = 515.33 × 347.40
  4. Step 4: Simplify right side
    373.59x = 179,023.91
  5. Step 5: Solve for x
    x = 179,023.91/373.59
  6. Step 6: Final answer
    x = 479.20

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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.