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Finding the Fourth Proportional to 454.84, 627.61 and 258.31

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Solution

The fourth proportional to 454.84, 627.61 and 258.31 is: 356.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.84 : 627.61 = 258.31 : x
  2. Step 2: Convert to fraction form
    454.84/627.61 = 258.31/x
  3. Step 3: Cross multiply
    454.84x = 627.61 × 258.31
  4. Step 4: Simplify right side
    454.84x = 162,117.94
  5. Step 5: Solve for x
    x = 162,117.94/454.84
  6. Step 6: Final answer
    x = 356.43

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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.