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Finding the Fourth Proportional to 962, 1,440.96 and 928.32

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Solution

The fourth proportional to 962, 1,440.96 and 928.32 is: 1,390.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    962 : 1,440.96 = 928.32 : x
  2. Step 2: Convert to fraction form
    962/1,440.96 = 928.32/x
  3. Step 3: Cross multiply
    962x = 1,440.96 × 928.32
  4. Step 4: Simplify right side
    962x = 1,337,671.99
  5. Step 5: Solve for x
    x = 1,337,671.99/962
  6. Step 6: Final answer
    x = 1,390.51

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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.