Home / 1,161.16-1,741.79-430.34

Finding the Fourth Proportional to 1,161.16, 1,741.79 and 430.34

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Solution

The fourth proportional to 1,161.16, 1,741.79 and 430.34 is: 645.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161.16 : 1,741.79 = 430.34 : x
  2. Step 2: Convert to fraction form
    1,161.16/1,741.79 = 430.34/x
  3. Step 3: Cross multiply
    1,161.16x = 1,741.79 × 430.34
  4. Step 4: Simplify right side
    1,161.16x = 749,561.91
  5. Step 5: Solve for x
    x = 749,561.91/1,161.16
  6. Step 6: Final answer
    x = 645.53

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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.