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Finding the Fourth Proportional to 693.85, 957.27 and 445.32

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Solution

The fourth proportional to 693.85, 957.27 and 445.32 is: 614.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.85 : 957.27 = 445.32 : x
  2. Step 2: Convert to fraction form
    693.85/957.27 = 445.32/x
  3. Step 3: Cross multiply
    693.85x = 957.27 × 445.32
  4. Step 4: Simplify right side
    693.85x = 426,291.48
  5. Step 5: Solve for x
    x = 426,291.48/693.85
  6. Step 6: Final answer
    x = 614.39

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Double scale
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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.