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Finding the Fourth Proportional to 452.97, 624.59 and 393.81

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Solution

The fourth proportional to 452.97, 624.59 and 393.81 is: 543.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.97 : 624.59 = 393.81 : x
  2. Step 2: Convert to fraction form
    452.97/624.59 = 393.81/x
  3. Step 3: Cross multiply
    452.97x = 624.59 × 393.81
  4. Step 4: Simplify right side
    452.97x = 245,969.36
  5. Step 5: Solve for x
    x = 245,969.36/452.97
  6. Step 6: Final answer
    x = 543.02

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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.