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Finding the Fourth Proportional to 488.23, 673.11 and 388.95

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Solution

The fourth proportional to 488.23, 673.11 and 388.95 is: 536.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.23 : 673.11 = 388.95 : x
  2. Step 2: Convert to fraction form
    488.23/673.11 = 388.95/x
  3. Step 3: Cross multiply
    488.23x = 673.11 × 388.95
  4. Step 4: Simplify right side
    488.23x = 261,807.40
  5. Step 5: Solve for x
    x = 261,807.40/488.23
  6. Step 6: Final answer
    x = 536.24

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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.