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Finding the Fourth Proportional to 403.58, 552.50 and 400.88

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Solution

The fourth proportional to 403.58, 552.50 and 400.88 is: 548.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.58 : 552.50 = 400.88 : x
  2. Step 2: Convert to fraction form
    403.58/552.50 = 400.88/x
  3. Step 3: Cross multiply
    403.58x = 552.50 × 400.88
  4. Step 4: Simplify right side
    403.58x = 221,486.20
  5. Step 5: Solve for x
    x = 221,486.20/403.58
  6. Step 6: Final answer
    x = 548.80

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.