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Finding the Fourth Proportional to 450.88, 621.12 and 423.04

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Solution

The fourth proportional to 450.88, 621.12 and 423.04 is: 582.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.88 : 621.12 = 423.04 : x
  2. Step 2: Convert to fraction form
    450.88/621.12 = 423.04/x
  3. Step 3: Cross multiply
    450.88x = 621.12 × 423.04
  4. Step 4: Simplify right side
    450.88x = 262,758.60
  5. Step 5: Solve for x
    x = 262,758.60/450.88
  6. Step 6: Final answer
    x = 582.77

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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.