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Finding the Fourth Proportional to 933.70, 1,400.72 and 317.37

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Solution

The fourth proportional to 933.70, 1,400.72 and 317.37 is: 476.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.70 : 1,400.72 = 317.37 : x
  2. Step 2: Convert to fraction form
    933.70/1,400.72 = 317.37/x
  3. Step 3: Cross multiply
    933.70x = 1,400.72 × 317.37
  4. Step 4: Simplify right side
    933.70x = 444,551.36
  5. Step 5: Solve for x
    x = 444,551.36/933.70
  6. Step 6: Final answer
    x = 476.12

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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.