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Finding the Fourth Proportional to 487.35, 670.97 and 454.23

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Solution

The fourth proportional to 487.35, 670.97 and 454.23 is: 625.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.35 : 670.97 = 454.23 : x
  2. Step 2: Convert to fraction form
    487.35/670.97 = 454.23/x
  3. Step 3: Cross multiply
    487.35x = 670.97 × 454.23
  4. Step 4: Simplify right side
    487.35x = 304,772.43
  5. Step 5: Solve for x
    x = 304,772.43/487.35
  6. Step 6: Final answer
    x = 625.37

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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.