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Finding the Fourth Proportional to 403, 604.56 and 143.07

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Solution

The fourth proportional to 403, 604.56 and 143.07 is: 214.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    403 : 604.56 = 143.07 : x
  2. Step 2: Convert to fraction form
    403/604.56 = 143.07/x
  3. Step 3: Cross multiply
    403x = 604.56 × 143.07
  4. Step 4: Simplify right side
    403x = 86,494.40
  5. Step 5: Solve for x
    x = 86,494.40/403
  6. Step 6: Final answer
    x = 214.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.