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Finding the Fourth Proportional to 1,360.58, 2,040.60 and 666.95

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Solution

The fourth proportional to 1,360.58, 2,040.60 and 666.95 is: 1,000.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.58 : 2,040.60 = 666.95 : x
  2. Step 2: Convert to fraction form
    1,360.58/2,040.60 = 666.95/x
  3. Step 3: Cross multiply
    1,360.58x = 2,040.60 × 666.95
  4. Step 4: Simplify right side
    1,360.58x = 1,360,978.17
  5. Step 5: Solve for x
    x = 1,360,978.17/1,360.58
  6. Step 6: Final answer
    x = 1,000.29

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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.