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Finding the Fourth Proportional to 1,130.00, 1,558.91 and 798.71

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Solution

The fourth proportional to 1,130.00, 1,558.91 and 798.71 is: 1,101.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130.00 : 1,558.91 = 798.71 : x
  2. Step 2: Convert to fraction form
    1,130.00/1,558.91 = 798.71/x
  3. Step 3: Cross multiply
    1,130.00x = 1,558.91 × 798.71
  4. Step 4: Simplify right side
    1,130.00x = 1,245,111.21
  5. Step 5: Solve for x
    x = 1,245,111.21/1,130.00
  6. Step 6: Final answer
    x = 1,101.87

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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.