Home / 1,317.16-1,974.50-450.87

Finding the Fourth Proportional to 1,317.16, 1,974.50 and 450.87

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Solution

The fourth proportional to 1,317.16, 1,974.50 and 450.87 is: 675.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.16 : 1,974.50 = 450.87 : x
  2. Step 2: Convert to fraction form
    1,317.16/1,974.50 = 450.87/x
  3. Step 3: Cross multiply
    1,317.16x = 1,974.50 × 450.87
  4. Step 4: Simplify right side
    1,317.16x = 890,237.38
  5. Step 5: Solve for x
    x = 890,237.38/1,317.16
  6. Step 6: Final answer
    x = 675.88

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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.