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Finding the Fourth Proportional to 623.91, 860.99 and 344.14

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Solution

The fourth proportional to 623.91, 860.99 and 344.14 is: 474.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.91 : 860.99 = 344.14 : x
  2. Step 2: Convert to fraction form
    623.91/860.99 = 344.14/x
  3. Step 3: Cross multiply
    623.91x = 860.99 × 344.14
  4. Step 4: Simplify right side
    623.91x = 296,301.10
  5. Step 5: Solve for x
    x = 296,301.10/623.91
  6. Step 6: Final answer
    x = 474.91

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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.