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Finding the Fourth Proportional to 488.33, 673.84 and 389.00

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Solution

The fourth proportional to 488.33, 673.84 and 389.00 is: 536.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.33 : 673.84 = 389.00 : x
  2. Step 2: Convert to fraction form
    488.33/673.84 = 389.00/x
  3. Step 3: Cross multiply
    488.33x = 673.84 × 389.00
  4. Step 4: Simplify right side
    488.33x = 262,123.55
  5. Step 5: Solve for x
    x = 262,123.55/488.33
  6. Step 6: Final answer
    x = 536.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.