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Finding the Fourth Proportional to 412.63, 618.91 and 124.07

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Solution

The fourth proportional to 412.63, 618.91 and 124.07 is: 186.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.63 : 618.91 = 124.07 : x
  2. Step 2: Convert to fraction form
    412.63/618.91 = 124.07/x
  3. Step 3: Cross multiply
    412.63x = 618.91 × 124.07
  4. Step 4: Simplify right side
    412.63x = 76,784.76
  5. Step 5: Solve for x
    x = 76,784.76/412.63
  6. Step 6: Final answer
    x = 186.09

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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.