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Finding the Fourth Proportional to 933.90, 1,401.03 and 626.10

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Solution

The fourth proportional to 933.90, 1,401.03 and 626.10 is: 939.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.90 : 1,401.03 = 626.10 : x
  2. Step 2: Convert to fraction form
    933.90/1,401.03 = 626.10/x
  3. Step 3: Cross multiply
    933.90x = 1,401.03 × 626.10
  4. Step 4: Simplify right side
    933.90x = 877,184.88
  5. Step 5: Solve for x
    x = 877,184.88/933.90
  6. Step 6: Final answer
    x = 939.27

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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.