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Finding the Fourth Proportional to 962.83, 1,444.67 and 921.31

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Solution

The fourth proportional to 962.83, 1,444.67 and 921.31 is: 1,382.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.83 : 1,444.67 = 921.31 : x
  2. Step 2: Convert to fraction form
    962.83/1,444.67 = 921.31/x
  3. Step 3: Cross multiply
    962.83x = 1,444.67 × 921.31
  4. Step 4: Simplify right side
    962.83x = 1,330,980.70
  5. Step 5: Solve for x
    x = 1,330,980.70/962.83
  6. Step 6: Final answer
    x = 1,382.37

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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.