Home / 1,355.48-2,033.27-431.01

Finding the Fourth Proportional to 1,355.48, 2,033.27 and 431.01

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Solution

The fourth proportional to 1,355.48, 2,033.27 and 431.01 is: 646.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355.48 : 2,033.27 = 431.01 : x
  2. Step 2: Convert to fraction form
    1,355.48/2,033.27 = 431.01/x
  3. Step 3: Cross multiply
    1,355.48x = 2,033.27 × 431.01
  4. Step 4: Simplify right side
    1,355.48x = 876,365.86
  5. Step 5: Solve for x
    x = 876,365.86/1,355.48
  6. Step 6: Final answer
    x = 646.54

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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.