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Finding the Fourth Proportional to 1,179.07, 1,627.05 and 655.06

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Solution

The fourth proportional to 1,179.07, 1,627.05 and 655.06 is: 903.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.07 : 1,627.05 = 655.06 : x
  2. Step 2: Convert to fraction form
    1,179.07/1,627.05 = 655.06/x
  3. Step 3: Cross multiply
    1,179.07x = 1,627.05 × 655.06
  4. Step 4: Simplify right side
    1,179.07x = 1,065,815.37
  5. Step 5: Solve for x
    x = 1,065,815.37/1,179.07
  6. Step 6: Final answer
    x = 903.95

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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.