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Finding the Fourth Proportional to 683.44, 943.23 and 462.40

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Solution

The fourth proportional to 683.44, 943.23 and 462.40 is: 638.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.44 : 943.23 = 462.40 : x
  2. Step 2: Convert to fraction form
    683.44/943.23 = 462.40/x
  3. Step 3: Cross multiply
    683.44x = 943.23 × 462.40
  4. Step 4: Simplify right side
    683.44x = 436,149.55
  5. Step 5: Solve for x
    x = 436,149.55/683.44
  6. Step 6: Final answer
    x = 638.17

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.