Home / 1,053.11-1,579.97-436.85

Finding the Fourth Proportional to 1,053.11, 1,579.97 and 436.85

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Solution

The fourth proportional to 1,053.11, 1,579.97 and 436.85 is: 655.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053.11 : 1,579.97 = 436.85 : x
  2. Step 2: Convert to fraction form
    1,053.11/1,579.97 = 436.85/x
  3. Step 3: Cross multiply
    1,053.11x = 1,579.97 × 436.85
  4. Step 4: Simplify right side
    1,053.11x = 690,209.89
  5. Step 5: Solve for x
    x = 690,209.89/1,053.11
  6. Step 6: Final answer
    x = 655.40

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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.