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Finding the Fourth Proportional to 454.06, 626.56 and 257.59

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Solution

The fourth proportional to 454.06, 626.56 and 257.59 is: 355.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.06 : 626.56 = 257.59 : x
  2. Step 2: Convert to fraction form
    454.06/626.56 = 257.59/x
  3. Step 3: Cross multiply
    454.06x = 626.56 × 257.59
  4. Step 4: Simplify right side
    454.06x = 161,395.59
  5. Step 5: Solve for x
    x = 161,395.59/454.06
  6. Step 6: Final answer
    x = 355.45

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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.