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Finding the Fourth Proportional to 452.01, 623.22 and 389.73

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Solution

The fourth proportional to 452.01, 623.22 and 389.73 is: 537.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.01 : 623.22 = 389.73 : x
  2. Step 2: Convert to fraction form
    452.01/623.22 = 389.73/x
  3. Step 3: Cross multiply
    452.01x = 623.22 × 389.73
  4. Step 4: Simplify right side
    452.01x = 242,887.53
  5. Step 5: Solve for x
    x = 242,887.53/452.01
  6. Step 6: Final answer
    x = 537.35

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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.