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Finding the Fourth Proportional to 694.04, 957.78 and 383.56

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Solution

The fourth proportional to 694.04, 957.78 and 383.56 is: 529.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.04 : 957.78 = 383.56 : x
  2. Step 2: Convert to fraction form
    694.04/957.78 = 383.56/x
  3. Step 3: Cross multiply
    694.04x = 957.78 × 383.56
  4. Step 4: Simplify right side
    694.04x = 367,366.10
  5. Step 5: Solve for x
    x = 367,366.10/694.04
  6. Step 6: Final answer
    x = 529.32

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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.