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Finding the Fourth Proportional to 1,001.93, 1,380.06 and 706.68

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Solution

The fourth proportional to 1,001.93, 1,380.06 and 706.68 is: 973.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.93 : 1,380.06 = 706.68 : x
  2. Step 2: Convert to fraction form
    1,001.93/1,380.06 = 706.68/x
  3. Step 3: Cross multiply
    1,001.93x = 1,380.06 × 706.68
  4. Step 4: Simplify right side
    1,001.93x = 975,260.80
  5. Step 5: Solve for x
    x = 975,260.80/1,001.93
  6. Step 6: Final answer
    x = 973.39

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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.