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Finding the Fourth Proportional to 623.81, 860.85 and 344.03

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Solution

The fourth proportional to 623.81, 860.85 and 344.03 is: 474.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.81 : 860.85 = 344.03 : x
  2. Step 2: Convert to fraction form
    623.81/860.85 = 344.03/x
  3. Step 3: Cross multiply
    623.81x = 860.85 × 344.03
  4. Step 4: Simplify right side
    623.81x = 296,160.38
  5. Step 5: Solve for x
    x = 296,160.38/623.81
  6. Step 6: Final answer
    x = 474.76

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1.5x scale

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.