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Finding the Fourth Proportional to 1,037.36, 1,556.16 and 766.88

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Solution

The fourth proportional to 1,037.36, 1,556.16 and 766.88 is: 1,150.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,037.36 : 1,556.16 = 766.88 : x
  2. Step 2: Convert to fraction form
    1,037.36/1,556.16 = 766.88/x
  3. Step 3: Cross multiply
    1,037.36x = 1,556.16 × 766.88
  4. Step 4: Simplify right side
    1,037.36x = 1,193,387.98
  5. Step 5: Solve for x
    x = 1,193,387.98/1,037.36
  6. Step 6: Final answer
    x = 1,150.41

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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.