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Finding the Fourth Proportional to 1,455.88, 2,008.86 and 866.32

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Solution

The fourth proportional to 1,455.88, 2,008.86 and 866.32 is: 1,195.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.88 : 2,008.86 = 866.32 : x
  2. Step 2: Convert to fraction form
    1,455.88/2,008.86 = 866.32/x
  3. Step 3: Cross multiply
    1,455.88x = 2,008.86 × 866.32
  4. Step 4: Simplify right side
    1,455.88x = 1,740,315.60
  5. Step 5: Solve for x
    x = 1,740,315.60/1,455.88
  6. Step 6: Final answer
    x = 1,195.37

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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.