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Finding the Fourth Proportional to 614.63, 921.93 and 203.71

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Solution

The fourth proportional to 614.63, 921.93 and 203.71 is: 305.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.63 : 921.93 = 203.71 : x
  2. Step 2: Convert to fraction form
    614.63/921.93 = 203.71/x
  3. Step 3: Cross multiply
    614.63x = 921.93 × 203.71
  4. Step 4: Simplify right side
    614.63x = 187,806.36
  5. Step 5: Solve for x
    x = 187,806.36/614.63
  6. Step 6: Final answer
    x = 305.56

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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.