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Finding the Fourth Proportional to 1,066.48, 1,471.53 and 673.29

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Solution

The fourth proportional to 1,066.48, 1,471.53 and 673.29 is: 929.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,066.48 : 1,471.53 = 673.29 : x
  2. Step 2: Convert to fraction form
    1,066.48/1,471.53 = 673.29/x
  3. Step 3: Cross multiply
    1,066.48x = 1,471.53 × 673.29
  4. Step 4: Simplify right side
    1,066.48x = 990,766.43
  5. Step 5: Solve for x
    x = 990,766.43/1,066.48
  6. Step 6: Final answer
    x = 929.01

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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.