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Finding the Fourth Proportional to 737.58, 1,107.43 and 647.37

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Solution

The fourth proportional to 737.58, 1,107.43 and 647.37 is: 971.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.58 : 1,107.43 = 647.37 : x
  2. Step 2: Convert to fraction form
    737.58/1,107.43 = 647.37/x
  3. Step 3: Cross multiply
    737.58x = 1,107.43 × 647.37
  4. Step 4: Simplify right side
    737.58x = 716,916.96
  5. Step 5: Solve for x
    x = 716,916.96/737.58
  6. Step 6: Final answer
    x = 971.99

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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.