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Finding the Fourth Proportional to 453.99, 626.50 and 257.50

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Solution

The fourth proportional to 453.99, 626.50 and 257.50 is: 355.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.99 : 626.50 = 257.50 : x
  2. Step 2: Convert to fraction form
    453.99/626.50 = 257.50/x
  3. Step 3: Cross multiply
    453.99x = 626.50 × 257.50
  4. Step 4: Simplify right side
    453.99x = 161,323.75
  5. Step 5: Solve for x
    x = 161,323.75/453.99
  6. Step 6: Final answer
    x = 355.35

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.