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Finding the Fourth Proportional to 962.09, 1,441.37 and 858.32

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Solution

The fourth proportional to 962.09, 1,441.37 and 858.32 is: 1,285.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.09 : 1,441.37 = 858.32 : x
  2. Step 2: Convert to fraction form
    962.09/1,441.37 = 858.32/x
  3. Step 3: Cross multiply
    962.09x = 1,441.37 × 858.32
  4. Step 4: Simplify right side
    962.09x = 1,237,155.63
  5. Step 5: Solve for x
    x = 1,237,155.63/962.09
  6. Step 6: Final answer
    x = 1,285.90

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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.