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Finding the Fourth Proportional to 693.74, 957.63 and 445.07

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Solution

The fourth proportional to 693.74, 957.63 and 445.07 is: 614.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.74 : 957.63 = 445.07 : x
  2. Step 2: Convert to fraction form
    693.74/957.63 = 445.07/x
  3. Step 3: Cross multiply
    693.74x = 957.63 × 445.07
  4. Step 4: Simplify right side
    693.74x = 426,205.37
  5. Step 5: Solve for x
    x = 426,205.37/693.74
  6. Step 6: Final answer
    x = 614.36

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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.