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Finding the Fourth Proportional to 1,199.46, 1,655.06 and 675.39

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Solution

The fourth proportional to 1,199.46, 1,655.06 and 675.39 is: 931.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,199.46 : 1,655.06 = 675.39 : x
  2. Step 2: Convert to fraction form
    1,199.46/1,655.06 = 675.39/x
  3. Step 3: Cross multiply
    1,199.46x = 1,655.06 × 675.39
  4. Step 4: Simplify right side
    1,199.46x = 1,117,810.97
  5. Step 5: Solve for x
    x = 1,117,810.97/1,199.46
  6. Step 6: Final answer
    x = 931.93

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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.