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Finding the Fourth Proportional to 587.21, 811.01 and 400.37

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Solution

The fourth proportional to 587.21, 811.01 and 400.37 is: 552.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.21 : 811.01 = 400.37 : x
  2. Step 2: Convert to fraction form
    587.21/811.01 = 400.37/x
  3. Step 3: Cross multiply
    587.21x = 811.01 × 400.37
  4. Step 4: Simplify right side
    587.21x = 324,705.10
  5. Step 5: Solve for x
    x = 324,705.10/587.21
  6. Step 6: Final answer
    x = 552.97

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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.