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Finding the Fourth Proportional to 494.00, 741.03 and 421.39

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Solution

The fourth proportional to 494.00, 741.03 and 421.39 is: 632.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.00 : 741.03 = 421.39 : x
  2. Step 2: Convert to fraction form
    494.00/741.03 = 421.39/x
  3. Step 3: Cross multiply
    494.00x = 741.03 × 421.39
  4. Step 4: Simplify right side
    494.00x = 312,260.18
  5. Step 5: Solve for x
    x = 312,260.18/494.00
  6. Step 6: Final answer
    x = 632.10

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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.