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Finding the Fourth Proportional to 933.94, 1,401.32 and 356.68

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Solution

The fourth proportional to 933.94, 1,401.32 and 356.68 is: 535.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.94 : 1,401.32 = 356.68 : x
  2. Step 2: Convert to fraction form
    933.94/1,401.32 = 356.68/x
  3. Step 3: Cross multiply
    933.94x = 1,401.32 × 356.68
  4. Step 4: Simplify right side
    933.94x = 499,822.82
  5. Step 5: Solve for x
    x = 499,822.82/933.94
  6. Step 6: Final answer
    x = 535.18

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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.