Home / 1,433.29-2,149.67-653.10

Finding the Fourth Proportional to 1,433.29, 2,149.67 and 653.10

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Solution

The fourth proportional to 1,433.29, 2,149.67 and 653.10 is: 979.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433.29 : 2,149.67 = 653.10 : x
  2. Step 2: Convert to fraction form
    1,433.29/2,149.67 = 653.10/x
  3. Step 3: Cross multiply
    1,433.29x = 2,149.67 × 653.10
  4. Step 4: Simplify right side
    1,433.29x = 1,403,949.48
  5. Step 5: Solve for x
    x = 1,403,949.48/1,433.29
  6. Step 6: Final answer
    x = 979.53

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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.