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Finding the Fourth Proportional to 403.04, 556.54 and 272.13

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Solution

The fourth proportional to 403.04, 556.54 and 272.13 is: 375.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.04 : 556.54 = 272.13 : x
  2. Step 2: Convert to fraction form
    403.04/556.54 = 272.13/x
  3. Step 3: Cross multiply
    403.04x = 556.54 × 272.13
  4. Step 4: Simplify right side
    403.04x = 151,448.46
  5. Step 5: Solve for x
    x = 151,448.46/403.04
  6. Step 6: Final answer
    x = 375.76

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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.