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Finding the Fourth Proportional to 662.60, 914.18 and 400.52

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Solution

The fourth proportional to 662.60, 914.18 and 400.52 is: 552.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.60 : 914.18 = 400.52 : x
  2. Step 2: Convert to fraction form
    662.60/914.18 = 400.52/x
  3. Step 3: Cross multiply
    662.60x = 914.18 × 400.52
  4. Step 4: Simplify right side
    662.60x = 366,147.37
  5. Step 5: Solve for x
    x = 366,147.37/662.60
  6. Step 6: Final answer
    x = 552.59

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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.