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Finding the Fourth Proportional to 662.36, 914.07 and 400.22

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Solution

The fourth proportional to 662.36, 914.07 and 400.22 is: 552.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.36 : 914.07 = 400.22 : x
  2. Step 2: Convert to fraction form
    662.36/914.07 = 400.22/x
  3. Step 3: Cross multiply
    662.36x = 914.07 × 400.22
  4. Step 4: Simplify right side
    662.36x = 365,829.45
  5. Step 5: Solve for x
    x = 365,829.45/662.36
  6. Step 6: Final answer
    x = 552.32

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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.