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Finding the Fourth Proportional to 1,060.80, 1,591.94 and 436.59

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Solution

The fourth proportional to 1,060.80, 1,591.94 and 436.59 is: 655.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,060.80 : 1,591.94 = 436.59 : x
  2. Step 2: Convert to fraction form
    1,060.80/1,591.94 = 436.59/x
  3. Step 3: Cross multiply
    1,060.80x = 1,591.94 × 436.59
  4. Step 4: Simplify right side
    1,060.80x = 695,025.08
  5. Step 5: Solve for x
    x = 695,025.08/1,060.80
  6. Step 6: Final answer
    x = 655.19

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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.