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Finding the Fourth Proportional to 943.44, 1,406.70 and 907.32

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Solution

The fourth proportional to 943.44, 1,406.70 and 907.32 is: 1,352.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.44 : 1,406.70 = 907.32 : x
  2. Step 2: Convert to fraction form
    943.44/1,406.70 = 907.32/x
  3. Step 3: Cross multiply
    943.44x = 1,406.70 × 907.32
  4. Step 4: Simplify right side
    943.44x = 1,276,327.04
  5. Step 5: Solve for x
    x = 1,276,327.04/943.44
  6. Step 6: Final answer
    x = 1,352.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.