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Finding the Fourth Proportional to 944.16, 1,302.92 and 722.76

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Solution

The fourth proportional to 944.16, 1,302.92 and 722.76 is: 997.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.16 : 1,302.92 = 722.76 : x
  2. Step 2: Convert to fraction form
    944.16/1,302.92 = 722.76/x
  3. Step 3: Cross multiply
    944.16x = 1,302.92 × 722.76
  4. Step 4: Simplify right side
    944.16x = 941,698.46
  5. Step 5: Solve for x
    x = 941,698.46/944.16
  6. Step 6: Final answer
    x = 997.39

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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.