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Finding the Fourth Proportional to 346.60, 520.16 and 127.43

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Solution

The fourth proportional to 346.60, 520.16 and 127.43 is: 191.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.60 : 520.16 = 127.43 : x
  2. Step 2: Convert to fraction form
    346.60/520.16 = 127.43/x
  3. Step 3: Cross multiply
    346.60x = 520.16 × 127.43
  4. Step 4: Simplify right side
    346.60x = 66,284.39
  5. Step 5: Solve for x
    x = 66,284.39/346.60
  6. Step 6: Final answer
    x = 191.24

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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.