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Finding the Fourth Proportional to 1,325.97, 1,829.93 and 766.54

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Solution

The fourth proportional to 1,325.97, 1,829.93 and 766.54 is: 1,057.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.97 : 1,829.93 = 766.54 : x
  2. Step 2: Convert to fraction form
    1,325.97/1,829.93 = 766.54/x
  3. Step 3: Cross multiply
    1,325.97x = 1,829.93 × 766.54
  4. Step 4: Simplify right side
    1,325.97x = 1,402,714.54
  5. Step 5: Solve for x
    x = 1,402,714.54/1,325.97
  6. Step 6: Final answer
    x = 1,057.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.