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Finding the Fourth Proportional to 984.24, 1,357.61 and 704.39

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Solution

The fourth proportional to 984.24, 1,357.61 and 704.39 is: 971.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    984.24 : 1,357.61 = 704.39 : x
  2. Step 2: Convert to fraction form
    984.24/1,357.61 = 704.39/x
  3. Step 3: Cross multiply
    984.24x = 1,357.61 × 704.39
  4. Step 4: Simplify right side
    984.24x = 956,280.12
  5. Step 5: Solve for x
    x = 956,280.12/984.24
  6. Step 6: Final answer
    x = 971.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.