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Finding the Fourth Proportional to 623.93, 859.70 and 448.97

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Solution

The fourth proportional to 623.93, 859.70 and 448.97 is: 618.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.93 : 859.70 = 448.97 : x
  2. Step 2: Convert to fraction form
    623.93/859.70 = 448.97/x
  3. Step 3: Cross multiply
    623.93x = 859.70 × 448.97
  4. Step 4: Simplify right side
    623.93x = 385,977.26
  5. Step 5: Solve for x
    x = 385,977.26/623.93
  6. Step 6: Final answer
    x = 618.62

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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.