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Finding the Fourth Proportional to 416.60, 625.14 and 185.51

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Solution

The fourth proportional to 416.60, 625.14 and 185.51 is: 278.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.60 : 625.14 = 185.51 : x
  2. Step 2: Convert to fraction form
    416.60/625.14 = 185.51/x
  3. Step 3: Cross multiply
    416.60x = 625.14 × 185.51
  4. Step 4: Simplify right side
    416.60x = 115,966.60
  5. Step 5: Solve for x
    x = 115,966.60/416.60
  6. Step 6: Final answer
    x = 278.37

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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.