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Finding the Fourth Proportional to 403.58, 556.98 and 366.02

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Solution

The fourth proportional to 403.58, 556.98 and 366.02 is: 505.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.58 : 556.98 = 366.02 : x
  2. Step 2: Convert to fraction form
    403.58/556.98 = 366.02/x
  3. Step 3: Cross multiply
    403.58x = 556.98 × 366.02
  4. Step 4: Simplify right side
    403.58x = 203,865.82
  5. Step 5: Solve for x
    x = 203,865.82/403.58
  6. Step 6: Final answer
    x = 505.14

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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.