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Finding the Fourth Proportional to 368.48, 508.44 and 211.08

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Solution

The fourth proportional to 368.48, 508.44 and 211.08 is: 291.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.48 : 508.44 = 211.08 : x
  2. Step 2: Convert to fraction form
    368.48/508.44 = 211.08/x
  3. Step 3: Cross multiply
    368.48x = 508.44 × 211.08
  4. Step 4: Simplify right side
    368.48x = 107,321.52
  5. Step 5: Solve for x
    x = 107,321.52/368.48
  6. Step 6: Final answer
    x = 291.25

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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.