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Finding the Fourth Proportional to 959.56, 1,439.34 and 526.48

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Solution

The fourth proportional to 959.56, 1,439.34 and 526.48 is: 789.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.56 : 1,439.34 = 526.48 : x
  2. Step 2: Convert to fraction form
    959.56/1,439.34 = 526.48/x
  3. Step 3: Cross multiply
    959.56x = 1,439.34 × 526.48
  4. Step 4: Simplify right side
    959.56x = 757,783.72
  5. Step 5: Solve for x
    x = 757,783.72/959.56
  6. Step 6: Final answer
    x = 789.72

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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.