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Finding the Fourth Proportional to 412.93, 619 and 152.86

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Solution

The fourth proportional to 412.93, 619 and 152.86 is: 229.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.93 : 619 = 152.86 : x
  2. Step 2: Convert to fraction form
    412.93/619 = 152.86/x
  3. Step 3: Cross multiply
    412.93x = 619 × 152.86
  4. Step 4: Simplify right side
    412.93x = 94,620.34
  5. Step 5: Solve for x
    x = 94,620.34/412.93
  6. Step 6: Final answer
    x = 229.14

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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.