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Finding the Fourth Proportional to 526.62, 789.46 and 266.40

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Solution

The fourth proportional to 526.62, 789.46 and 266.40 is: 399.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.62 : 789.46 = 266.40 : x
  2. Step 2: Convert to fraction form
    526.62/789.46 = 266.40/x
  3. Step 3: Cross multiply
    526.62x = 789.46 × 266.40
  4. Step 4: Simplify right side
    526.62x = 210,312.14
  5. Step 5: Solve for x
    x = 210,312.14/526.62
  6. Step 6: Final answer
    x = 399.36

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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.