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Finding the Fourth Proportional to 403.13, 556.34 and 237.30

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Solution

The fourth proportional to 403.13, 556.34 and 237.30 is: 327.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.13 : 556.34 = 237.30 : x
  2. Step 2: Convert to fraction form
    403.13/556.34 = 237.30/x
  3. Step 3: Cross multiply
    403.13x = 556.34 × 237.30
  4. Step 4: Simplify right side
    403.13x = 132,018.30
  5. Step 5: Solve for x
    x = 132,018.30/403.13
  6. Step 6: Final answer
    x = 327.49

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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.