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Finding the Fourth Proportional to 543.58, 815.62 and 201.50

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Solution

The fourth proportional to 543.58, 815.62 and 201.50 is: 302.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.58 : 815.62 = 201.50 : x
  2. Step 2: Convert to fraction form
    543.58/815.62 = 201.50/x
  3. Step 3: Cross multiply
    543.58x = 815.62 × 201.50
  4. Step 4: Simplify right side
    543.58x = 164,347.43
  5. Step 5: Solve for x
    x = 164,347.43/543.58
  6. Step 6: Final answer
    x = 302.34

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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.