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Finding the Fourth Proportional to 453.08, 625.20 and 403.76

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Solution

The fourth proportional to 453.08, 625.20 and 403.76 is: 557.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.08 : 625.20 = 403.76 : x
  2. Step 2: Convert to fraction form
    453.08/625.20 = 403.76/x
  3. Step 3: Cross multiply
    453.08x = 625.20 × 403.76
  4. Step 4: Simplify right side
    453.08x = 252,430.75
  5. Step 5: Solve for x
    x = 252,430.75/453.08
  6. Step 6: Final answer
    x = 557.14

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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.