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Finding the Fourth Proportional to 1,160.47, 1,740.16 and 673.66

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Solution

The fourth proportional to 1,160.47, 1,740.16 and 673.66 is: 1,010.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,160.47 : 1,740.16 = 673.66 : x
  2. Step 2: Convert to fraction form
    1,160.47/1,740.16 = 673.66/x
  3. Step 3: Cross multiply
    1,160.47x = 1,740.16 × 673.66
  4. Step 4: Simplify right side
    1,160.47x = 1,172,276.19
  5. Step 5: Solve for x
    x = 1,172,276.19/1,160.47
  6. Step 6: Final answer
    x = 1,010.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.