Home / 1,053.45-1,579.55-436.41

Finding the Fourth Proportional to 1,053.45, 1,579.55 and 436.41

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Solution

The fourth proportional to 1,053.45, 1,579.55 and 436.41 is: 654.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053.45 : 1,579.55 = 436.41 : x
  2. Step 2: Convert to fraction form
    1,053.45/1,579.55 = 436.41/x
  3. Step 3: Cross multiply
    1,053.45x = 1,579.55 × 436.41
  4. Step 4: Simplify right side
    1,053.45x = 689,329.23
  5. Step 5: Solve for x
    x = 689,329.23/1,053.45
  6. Step 6: Final answer
    x = 654.35

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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.