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Finding the Fourth Proportional to 936.56, 1,402.03 and 623.90

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Solution

The fourth proportional to 936.56, 1,402.03 and 623.90 is: 933.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    936.56 : 1,402.03 = 623.90 : x
  2. Step 2: Convert to fraction form
    936.56/1,402.03 = 623.90/x
  3. Step 3: Cross multiply
    936.56x = 1,402.03 × 623.90
  4. Step 4: Simplify right side
    936.56x = 874,723.40
  5. Step 5: Solve for x
    x = 874,723.40/936.56
  6. Step 6: Final answer
    x = 933.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.