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Finding the Fourth Proportional to 484.11, 726.53 and 389.07

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Solution

The fourth proportional to 484.11, 726.53 and 389.07 is: 583.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.11 : 726.53 = 389.07 : x
  2. Step 2: Convert to fraction form
    484.11/726.53 = 389.07/x
  3. Step 3: Cross multiply
    484.11x = 726.53 × 389.07
  4. Step 4: Simplify right side
    484.11x = 282,669.08
  5. Step 5: Solve for x
    x = 282,669.08/484.11
  6. Step 6: Final answer
    x = 583.89

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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.