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Finding the Fourth Proportional to 1,026.75, 1,416.45 and 673.05

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Solution

The fourth proportional to 1,026.75, 1,416.45 and 673.05 is: 928.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026.75 : 1,416.45 = 673.05 : x
  2. Step 2: Convert to fraction form
    1,026.75/1,416.45 = 673.05/x
  3. Step 3: Cross multiply
    1,026.75x = 1,416.45 × 673.05
  4. Step 4: Simplify right side
    1,026.75x = 953,334.59
  5. Step 5: Solve for x
    x = 953,334.59/1,026.75
  6. Step 6: Final answer
    x = 928.50

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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.