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Finding the Fourth Proportional to 933.55, 1,400.33 and 907.63

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Solution

The fourth proportional to 933.55, 1,400.33 and 907.63 is: 1,361.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.55 : 1,400.33 = 907.63 : x
  2. Step 2: Convert to fraction form
    933.55/1,400.33 = 907.63/x
  3. Step 3: Cross multiply
    933.55x = 1,400.33 × 907.63
  4. Step 4: Simplify right side
    933.55x = 1,270,976.98
  5. Step 5: Solve for x
    x = 1,270,976.98/933.55
  6. Step 6: Final answer
    x = 1,361.45

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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.