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Finding the Fourth Proportional to 526.62, 789.24 and 485.58

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Solution

The fourth proportional to 526.62, 789.24 and 485.58 is: 727.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.62 : 789.24 = 485.58 : x
  2. Step 2: Convert to fraction form
    526.62/789.24 = 485.58/x
  3. Step 3: Cross multiply
    526.62x = 789.24 × 485.58
  4. Step 4: Simplify right side
    526.62x = 383,239.16
  5. Step 5: Solve for x
    x = 383,239.16/526.62
  6. Step 6: Final answer
    x = 727.73

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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.