Home / 1,297.08-1,944.66-431.16

Finding the Fourth Proportional to 1,297.08, 1,944.66 and 431.16

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Solution

The fourth proportional to 1,297.08, 1,944.66 and 431.16 is: 646.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297.08 : 1,944.66 = 431.16 : x
  2. Step 2: Convert to fraction form
    1,297.08/1,944.66 = 431.16/x
  3. Step 3: Cross multiply
    1,297.08x = 1,944.66 × 431.16
  4. Step 4: Simplify right side
    1,297.08x = 838,459.61
  5. Step 5: Solve for x
    x = 838,459.61/1,297.08
  6. Step 6: Final answer
    x = 646.42

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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.