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Finding the Fourth Proportional to 1,170.73, 1,615.65 and 673.36

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Solution

The fourth proportional to 1,170.73, 1,615.65 and 673.36 is: 929.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170.73 : 1,615.65 = 673.36 : x
  2. Step 2: Convert to fraction form
    1,170.73/1,615.65 = 673.36/x
  3. Step 3: Cross multiply
    1,170.73x = 1,615.65 × 673.36
  4. Step 4: Simplify right side
    1,170.73x = 1,087,918.74
  5. Step 5: Solve for x
    x = 1,087,918.74/1,170.73
  6. Step 6: Final answer
    x = 929.27

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1.5x scale

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.