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Finding the Fourth Proportional to 526.51, 789.72 and 201.88

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Solution

The fourth proportional to 526.51, 789.72 and 201.88 is: 302.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.51 : 789.72 = 201.88 : x
  2. Step 2: Convert to fraction form
    526.51/789.72 = 201.88/x
  3. Step 3: Cross multiply
    526.51x = 789.72 × 201.88
  4. Step 4: Simplify right side
    526.51x = 159,428.67
  5. Step 5: Solve for x
    x = 159,428.67/526.51
  6. Step 6: Final answer
    x = 302.80

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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.