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Finding the Fourth Proportional to 668.77, 923.39 and 482.67

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Solution

The fourth proportional to 668.77, 923.39 and 482.67 is: 666.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.77 : 923.39 = 482.67 : x
  2. Step 2: Convert to fraction form
    668.77/923.39 = 482.67/x
  3. Step 3: Cross multiply
    668.77x = 923.39 × 482.67
  4. Step 4: Simplify right side
    668.77x = 445,692.05
  5. Step 5: Solve for x
    x = 445,692.05/668.77
  6. Step 6: Final answer
    x = 666.44

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Find fourth proportional to 334.38, 461.69 and 241.34
Half scale
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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.