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Finding the Fourth Proportional to 453.55, 625.72 and 257.03

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Solution

The fourth proportional to 453.55, 625.72 and 257.03 is: 354.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.55 : 625.72 = 257.03 : x
  2. Step 2: Convert to fraction form
    453.55/625.72 = 257.03/x
  3. Step 3: Cross multiply
    453.55x = 625.72 × 257.03
  4. Step 4: Simplify right side
    453.55x = 160,828.81
  5. Step 5: Solve for x
    x = 160,828.81/453.55
  6. Step 6: Final answer
    x = 354.60

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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.