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Finding the Fourth Proportional to 934.85, 1,402.20 and 526.54

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Solution

The fourth proportional to 934.85, 1,402.20 and 526.54 is: 789.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.85 : 1,402.20 = 526.54 : x
  2. Step 2: Convert to fraction form
    934.85/1,402.20 = 526.54/x
  3. Step 3: Cross multiply
    934.85x = 1,402.20 × 526.54
  4. Step 4: Simplify right side
    934.85x = 738,314.39
  5. Step 5: Solve for x
    x = 738,314.39/934.85
  6. Step 6: Final answer
    x = 789.77

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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.