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Finding the Fourth Proportional to 944.24, 1,415.40 and 396.76

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Solution

The fourth proportional to 944.24, 1,415.40 and 396.76 is: 594.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.24 : 1,415.40 = 396.76 : x
  2. Step 2: Convert to fraction form
    944.24/1,415.40 = 396.76/x
  3. Step 3: Cross multiply
    944.24x = 1,415.40 × 396.76
  4. Step 4: Simplify right side
    944.24x = 561,574.10
  5. Step 5: Solve for x
    x = 561,574.10/944.24
  6. Step 6: Final answer
    x = 594.74

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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.