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Finding the Fourth Proportional to 962.19, 1,440.75 and 882

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Solution

The fourth proportional to 962.19, 1,440.75 and 882 is: 1,320.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.19 : 1,440.75 = 882 : x
  2. Step 2: Convert to fraction form
    962.19/1,440.75 = 882/x
  3. Step 3: Cross multiply
    962.19x = 1,440.75 × 882
  4. Step 4: Simplify right side
    962.19x = 1,270,741.50
  5. Step 5: Solve for x
    x = 1,270,741.50/962.19
  6. Step 6: Final answer
    x = 1,320.68

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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.