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Finding the Fourth Proportional to 1,157.03, 1,595.92 and 708.69

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Solution

The fourth proportional to 1,157.03, 1,595.92 and 708.69 is: 977.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,157.03 : 1,595.92 = 708.69 : x
  2. Step 2: Convert to fraction form
    1,157.03/1,595.92 = 708.69/x
  3. Step 3: Cross multiply
    1,157.03x = 1,595.92 × 708.69
  4. Step 4: Simplify right side
    1,157.03x = 1,131,012.54
  5. Step 5: Solve for x
    x = 1,131,012.54/1,157.03
  6. Step 6: Final answer
    x = 977.51

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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.