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Finding the Fourth Proportional to 1,360.83, 2,039.72 and 538.48

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Solution

The fourth proportional to 1,360.83, 2,039.72 and 538.48 is: 807.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.83 : 2,039.72 = 538.48 : x
  2. Step 2: Convert to fraction form
    1,360.83/2,039.72 = 538.48/x
  3. Step 3: Cross multiply
    1,360.83x = 2,039.72 × 538.48
  4. Step 4: Simplify right side
    1,360.83x = 1,098,338.23
  5. Step 5: Solve for x
    x = 1,098,338.23/1,360.83
  6. Step 6: Final answer
    x = 807.11

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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.