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Finding the Fourth Proportional to 453.48, 626.12 and 285.51

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Solution

The fourth proportional to 453.48, 626.12 and 285.51 is: 394.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.48 : 626.12 = 285.51 : x
  2. Step 2: Convert to fraction form
    453.48/626.12 = 285.51/x
  3. Step 3: Cross multiply
    453.48x = 626.12 × 285.51
  4. Step 4: Simplify right side
    453.48x = 178,762.79
  5. Step 5: Solve for x
    x = 178,762.79/453.48
  6. Step 6: Final answer
    x = 394.20

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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.