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Finding the Fourth Proportional to 1,207.01, 1,665.23 and 734.71

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Solution

The fourth proportional to 1,207.01, 1,665.23 and 734.71 is: 1,013.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207.01 : 1,665.23 = 734.71 : x
  2. Step 2: Convert to fraction form
    1,207.01/1,665.23 = 734.71/x
  3. Step 3: Cross multiply
    1,207.01x = 1,665.23 × 734.71
  4. Step 4: Simplify right side
    1,207.01x = 1,223,453.30
  5. Step 5: Solve for x
    x = 1,223,453.30/1,207.01
  6. Step 6: Final answer
    x = 1,013.63

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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.