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Finding the Fourth Proportional to 454.00, 626.60 and 257.57

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Solution

The fourth proportional to 454.00, 626.60 and 257.57 is: 355.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.00 : 626.60 = 257.57 : x
  2. Step 2: Convert to fraction form
    454.00/626.60 = 257.57/x
  3. Step 3: Cross multiply
    454.00x = 626.60 × 257.57
  4. Step 4: Simplify right side
    454.00x = 161,393.36
  5. Step 5: Solve for x
    x = 161,393.36/454.00
  6. Step 6: Final answer
    x = 355.50

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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.