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Finding the Fourth Proportional to 933.77, 1,400.49 and 308.99

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Solution

The fourth proportional to 933.77, 1,400.49 and 308.99 is: 463.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.77 : 1,400.49 = 308.99 : x
  2. Step 2: Convert to fraction form
    933.77/1,400.49 = 308.99/x
  3. Step 3: Cross multiply
    933.77x = 1,400.49 × 308.99
  4. Step 4: Simplify right side
    933.77x = 432,730.40
  5. Step 5: Solve for x
    x = 432,730.40/933.77
  6. Step 6: Final answer
    x = 463.43

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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.