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Finding the Fourth Proportional to 737.88, 1,105.58 and 607.78

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Solution

The fourth proportional to 737.88, 1,105.58 and 607.78 is: 910.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.88 : 1,105.58 = 607.78 : x
  2. Step 2: Convert to fraction form
    737.88/1,105.58 = 607.78/x
  3. Step 3: Cross multiply
    737.88x = 1,105.58 × 607.78
  4. Step 4: Simplify right side
    737.88x = 671,946.37
  5. Step 5: Solve for x
    x = 671,946.37/737.88
  6. Step 6: Final answer
    x = 910.65

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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.