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Finding the Fourth Proportional to 962.56, 1,326 and 667.32

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Solution

The fourth proportional to 962.56, 1,326 and 667.32 is: 919.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.56 : 1,326 = 667.32 : x
  2. Step 2: Convert to fraction form
    962.56/1,326 = 667.32/x
  3. Step 3: Cross multiply
    962.56x = 1,326 × 667.32
  4. Step 4: Simplify right side
    962.56x = 884,866.32
  5. Step 5: Solve for x
    x = 884,866.32/962.56
  6. Step 6: Final answer
    x = 919.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.