Home / 1,355.26-2,032.96-430.89

Finding the Fourth Proportional to 1,355.26, 2,032.96 and 430.89

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Solution

The fourth proportional to 1,355.26, 2,032.96 and 430.89 is: 646.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355.26 : 2,032.96 = 430.89 : x
  2. Step 2: Convert to fraction form
    1,355.26/2,032.96 = 430.89/x
  3. Step 3: Cross multiply
    1,355.26x = 2,032.96 × 430.89
  4. Step 4: Simplify right side
    1,355.26x = 875,982.67
  5. Step 5: Solve for x
    x = 875,982.67/1,355.26
  6. Step 6: Final answer
    x = 646.36

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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.