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Finding the Fourth Proportional to 323.99, 483.63 and 285.07

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Solution

The fourth proportional to 323.99, 483.63 and 285.07 is: 425.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.99 : 483.63 = 285.07 : x
  2. Step 2: Convert to fraction form
    323.99/483.63 = 285.07/x
  3. Step 3: Cross multiply
    323.99x = 483.63 × 285.07
  4. Step 4: Simplify right side
    323.99x = 137,868.40
  5. Step 5: Solve for x
    x = 137,868.40/323.99
  6. Step 6: Final answer
    x = 425.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.