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Finding the Fourth Proportional to 852.21, 1,277.36 and 358.47

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Solution

The fourth proportional to 852.21, 1,277.36 and 358.47 is: 537.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.21 : 1,277.36 = 358.47 : x
  2. Step 2: Convert to fraction form
    852.21/1,277.36 = 358.47/x
  3. Step 3: Cross multiply
    852.21x = 1,277.36 × 358.47
  4. Step 4: Simplify right side
    852.21x = 457,893.21
  5. Step 5: Solve for x
    x = 457,893.21/852.21
  6. Step 6: Final answer
    x = 537.30

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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.