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Finding the Fourth Proportional to 489.23, 673.61 and 462.16

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Solution

The fourth proportional to 489.23, 673.61 and 462.16 is: 636.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.23 : 673.61 = 462.16 : x
  2. Step 2: Convert to fraction form
    489.23/673.61 = 462.16/x
  3. Step 3: Cross multiply
    489.23x = 673.61 × 462.16
  4. Step 4: Simplify right side
    489.23x = 311,315.60
  5. Step 5: Solve for x
    x = 311,315.60/489.23
  6. Step 6: Final answer
    x = 636.34

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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.