Home / 930.17-1,283.87-631.92

Finding the Fourth Proportional to 930.17, 1,283.87 and 631.92

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Solution

The fourth proportional to 930.17, 1,283.87 and 631.92 is: 872.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    930.17 : 1,283.87 = 631.92 : x
  2. Step 2: Convert to fraction form
    930.17/1,283.87 = 631.92/x
  3. Step 3: Cross multiply
    930.17x = 1,283.87 × 631.92
  4. Step 4: Simplify right side
    930.17x = 811,299.97
  5. Step 5: Solve for x
    x = 811,299.97/930.17
  6. Step 6: Final answer
    x = 872.20

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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.