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Finding the Fourth Proportional to 526.75, 789.45 and 353.16

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Solution

The fourth proportional to 526.75, 789.45 and 353.16 is: 529.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.75 : 789.45 = 353.16 : x
  2. Step 2: Convert to fraction form
    526.75/789.45 = 353.16/x
  3. Step 3: Cross multiply
    526.75x = 789.45 × 353.16
  4. Step 4: Simplify right side
    526.75x = 278,800.84
  5. Step 5: Solve for x
    x = 278,800.84/526.75
  6. Step 6: Final answer
    x = 529.28

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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.