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Finding the Fourth Proportional to 1,317.94, 1,818.24 and 758.29

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Solution

The fourth proportional to 1,317.94, 1,818.24 and 758.29 is: 1,046.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.94 : 1,818.24 = 758.29 : x
  2. Step 2: Convert to fraction form
    1,317.94/1,818.24 = 758.29/x
  3. Step 3: Cross multiply
    1,317.94x = 1,818.24 × 758.29
  4. Step 4: Simplify right side
    1,317.94x = 1,378,753.21
  5. Step 5: Solve for x
    x = 1,378,753.21/1,317.94
  6. Step 6: Final answer
    x = 1,046.14

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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.