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Finding the Fourth Proportional to 526.36, 789.30 and 309.88

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Solution

The fourth proportional to 526.36, 789.30 and 309.88 is: 464.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.36 : 789.30 = 309.88 : x
  2. Step 2: Convert to fraction form
    526.36/789.30 = 309.88/x
  3. Step 3: Cross multiply
    526.36x = 789.30 × 309.88
  4. Step 4: Simplify right side
    526.36x = 244,588.28
  5. Step 5: Solve for x
    x = 244,588.28/526.36
  6. Step 6: Final answer
    x = 464.68

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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.