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Finding the Fourth Proportional to 656.92, 985.08 and 383.09

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Solution

The fourth proportional to 656.92, 985.08 and 383.09 is: 574.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.92 : 985.08 = 383.09 : x
  2. Step 2: Convert to fraction form
    656.92/985.08 = 383.09/x
  3. Step 3: Cross multiply
    656.92x = 985.08 × 383.09
  4. Step 4: Simplify right side
    656.92x = 377,372.38
  5. Step 5: Solve for x
    x = 377,372.38/656.92
  6. Step 6: Final answer
    x = 574.46

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1.5x scale

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.