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Finding the Fourth Proportional to 626.24, 938.44 and 313.72

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Solution

The fourth proportional to 626.24, 938.44 and 313.72 is: 470.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.24 : 938.44 = 313.72 : x
  2. Step 2: Convert to fraction form
    626.24/938.44 = 313.72/x
  3. Step 3: Cross multiply
    626.24x = 938.44 × 313.72
  4. Step 4: Simplify right side
    626.24x = 294,407.40
  5. Step 5: Solve for x
    x = 294,407.40/626.24
  6. Step 6: Final answer
    x = 470.12

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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.