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Finding the Fourth Proportional to 1,045.62, 1,443.61 and 673.25

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Solution

The fourth proportional to 1,045.62, 1,443.61 and 673.25 is: 929.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.62 : 1,443.61 = 673.25 : x
  2. Step 2: Convert to fraction form
    1,045.62/1,443.61 = 673.25/x
  3. Step 3: Cross multiply
    1,045.62x = 1,443.61 × 673.25
  4. Step 4: Simplify right side
    1,045.62x = 971,901.53
  5. Step 5: Solve for x
    x = 971,901.53/1,045.62
  6. Step 6: Final answer
    x = 929.50

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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.