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Finding the Fourth Proportional to 662.77, 914.64 and 400.73

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Solution

The fourth proportional to 662.77, 914.64 and 400.73 is: 553.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.77 : 914.64 = 400.73 : x
  2. Step 2: Convert to fraction form
    662.77/914.64 = 400.73/x
  3. Step 3: Cross multiply
    662.77x = 914.64 × 400.73
  4. Step 4: Simplify right side
    662.77x = 366,523.69
  5. Step 5: Solve for x
    x = 366,523.69/662.77
  6. Step 6: Final answer
    x = 553.02

Related Problems

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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.