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Finding the Fourth Proportional to 403.17, 556.37 and 228.52

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Solution

The fourth proportional to 403.17, 556.37 and 228.52 is: 315.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.17 : 556.37 = 228.52 : x
  2. Step 2: Convert to fraction form
    403.17/556.37 = 228.52/x
  3. Step 3: Cross multiply
    403.17x = 556.37 × 228.52
  4. Step 4: Simplify right side
    403.17x = 127,140.02
  5. Step 5: Solve for x
    x = 127,140.02/403.17
  6. Step 6: Final answer
    x = 315.35

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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.