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Finding the Fourth Proportional to 346.47, 519.62 and 102.99

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Solution

The fourth proportional to 346.47, 519.62 and 102.99 is: 154.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.47 : 519.62 = 102.99 : x
  2. Step 2: Convert to fraction form
    346.47/519.62 = 102.99/x
  3. Step 3: Cross multiply
    346.47x = 519.62 × 102.99
  4. Step 4: Simplify right side
    346.47x = 53,515.15
  5. Step 5: Solve for x
    x = 53,515.15/346.47
  6. Step 6: Final answer
    x = 154.46

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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.