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Finding the Fourth Proportional to 1,155.92, 1,595.27 and 713.86

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Solution

The fourth proportional to 1,155.92, 1,595.27 and 713.86 is: 985.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155.92 : 1,595.27 = 713.86 : x
  2. Step 2: Convert to fraction form
    1,155.92/1,595.27 = 713.86/x
  3. Step 3: Cross multiply
    1,155.92x = 1,595.27 × 713.86
  4. Step 4: Simplify right side
    1,155.92x = 1,138,797.24
  5. Step 5: Solve for x
    x = 1,138,797.24/1,155.92
  6. Step 6: Final answer
    x = 985.19

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1.5x scale

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.