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Finding the Fourth Proportional to 541.49, 813.44 and 419.38

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Solution

The fourth proportional to 541.49, 813.44 and 419.38 is: 630.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.49 : 813.44 = 419.38 : x
  2. Step 2: Convert to fraction form
    541.49/813.44 = 419.38/x
  3. Step 3: Cross multiply
    541.49x = 813.44 × 419.38
  4. Step 4: Simplify right side
    541.49x = 341,139.48
  5. Step 5: Solve for x
    x = 341,139.48/541.49
  6. Step 6: Final answer
    x = 630.01

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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.