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Finding the Fourth Proportional to 452.81, 624.69 and 287.03

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Solution

The fourth proportional to 452.81, 624.69 and 287.03 is: 395.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.81 : 624.69 = 287.03 : x
  2. Step 2: Convert to fraction form
    452.81/624.69 = 287.03/x
  3. Step 3: Cross multiply
    452.81x = 624.69 × 287.03
  4. Step 4: Simplify right side
    452.81x = 179,301.65
  5. Step 5: Solve for x
    x = 179,301.65/452.81
  6. Step 6: Final answer
    x = 395.98

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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.