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Finding the Fourth Proportional to 1,046.60, 1,443.69 and 673.46

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Solution

The fourth proportional to 1,046.60, 1,443.69 and 673.46 is: 928.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,046.60 : 1,443.69 = 673.46 : x
  2. Step 2: Convert to fraction form
    1,046.60/1,443.69 = 673.46/x
  3. Step 3: Cross multiply
    1,046.60x = 1,443.69 × 673.46
  4. Step 4: Simplify right side
    1,046.60x = 972,267.47
  5. Step 5: Solve for x
    x = 972,267.47/1,046.60
  6. Step 6: Final answer
    x = 928.98

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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.