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Finding the Fourth Proportional to 526.61, 789.92 and 404.50

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Solution

The fourth proportional to 526.61, 789.92 and 404.50 is: 606.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.61 : 789.92 = 404.50 : x
  2. Step 2: Convert to fraction form
    526.61/789.92 = 404.50/x
  3. Step 3: Cross multiply
    526.61x = 789.92 × 404.50
  4. Step 4: Simplify right side
    526.61x = 319,522.64
  5. Step 5: Solve for x
    x = 319,522.64/526.61
  6. Step 6: Final answer
    x = 606.75

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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.