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Finding the Fourth Proportional to 701.57, 1,053.30 and 409.37

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Solution

The fourth proportional to 701.57, 1,053.30 and 409.37 is: 614.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.57 : 1,053.30 = 409.37 : x
  2. Step 2: Convert to fraction form
    701.57/1,053.30 = 409.37/x
  3. Step 3: Cross multiply
    701.57x = 1,053.30 × 409.37
  4. Step 4: Simplify right side
    701.57x = 431,184.15
  5. Step 5: Solve for x
    x = 431,184.15/701.57
  6. Step 6: Final answer
    x = 614.60

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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.