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Finding the Fourth Proportional to 346.59, 519.88 and 103.15

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Solution

The fourth proportional to 346.59, 519.88 and 103.15 is: 154.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.59 : 519.88 = 103.15 : x
  2. Step 2: Convert to fraction form
    346.59/519.88 = 103.15/x
  3. Step 3: Cross multiply
    346.59x = 519.88 × 103.15
  4. Step 4: Simplify right side
    346.59x = 53,625.62
  5. Step 5: Solve for x
    x = 53,625.62/346.59
  6. Step 6: Final answer
    x = 154.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.