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Finding the Fourth Proportional to 614.15, 920.86 and 203.17

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Solution

The fourth proportional to 614.15, 920.86 and 203.17 is: 304.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.15 : 920.86 = 203.17 : x
  2. Step 2: Convert to fraction form
    614.15/920.86 = 203.17/x
  3. Step 3: Cross multiply
    614.15x = 920.86 × 203.17
  4. Step 4: Simplify right side
    614.15x = 187,090.11
  5. Step 5: Solve for x
    x = 187,090.11/614.15
  6. Step 6: Final answer
    x = 304.63

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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.