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Finding the Fourth Proportional to 1,307.45, 1,960.77 and 441.56

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Solution

The fourth proportional to 1,307.45, 1,960.77 and 441.56 is: 662.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307.45 : 1,960.77 = 441.56 : x
  2. Step 2: Convert to fraction form
    1,307.45/1,960.77 = 441.56/x
  3. Step 3: Cross multiply
    1,307.45x = 1,960.77 × 441.56
  4. Step 4: Simplify right side
    1,307.45x = 865,804.16
  5. Step 5: Solve for x
    x = 865,804.16/1,307.45
  6. Step 6: Final answer
    x = 662.21

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1.5x scale

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.