Home / 1,317.04-1,975.68-451.12

Finding the Fourth Proportional to 1,317.04, 1,975.68 and 451.12

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Solution

The fourth proportional to 1,317.04, 1,975.68 and 451.12 is: 676.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.04 : 1,975.68 = 451.12 : x
  2. Step 2: Convert to fraction form
    1,317.04/1,975.68 = 451.12/x
  3. Step 3: Cross multiply
    1,317.04x = 1,975.68 × 451.12
  4. Step 4: Simplify right side
    1,317.04x = 891,268.76
  5. Step 5: Solve for x
    x = 891,268.76/1,317.04
  6. Step 6: Final answer
    x = 676.72

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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.