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Finding the Fourth Proportional to 453, 625.32 and 298.20

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Solution

The fourth proportional to 453, 625.32 and 298.20 is: 411.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    453 : 625.32 = 298.20 : x
  2. Step 2: Convert to fraction form
    453/625.32 = 298.20/x
  3. Step 3: Cross multiply
    453x = 625.32 × 298.20
  4. Step 4: Simplify right side
    453x = 186,470.42
  5. Step 5: Solve for x
    x = 186,470.42/453
  6. Step 6: Final answer
    x = 411.63

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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.