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Finding the Fourth Proportional to 614.39, 919.55 and 498.56

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Solution

The fourth proportional to 614.39, 919.55 and 498.56 is: 746.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.39 : 919.55 = 498.56 : x
  2. Step 2: Convert to fraction form
    614.39/919.55 = 498.56/x
  3. Step 3: Cross multiply
    614.39x = 919.55 × 498.56
  4. Step 4: Simplify right side
    614.39x = 458,447.50
  5. Step 5: Solve for x
    x = 458,447.50/614.39
  6. Step 6: Final answer
    x = 746.19

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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.