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Finding the Fourth Proportional to 944.59, 1,415.89 and 456.61

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Solution

The fourth proportional to 944.59, 1,415.89 and 456.61 is: 684.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.59 : 1,415.89 = 456.61 : x
  2. Step 2: Convert to fraction form
    944.59/1,415.89 = 456.61/x
  3. Step 3: Cross multiply
    944.59x = 1,415.89 × 456.61
  4. Step 4: Simplify right side
    944.59x = 646,509.53
  5. Step 5: Solve for x
    x = 646,509.53/944.59
  6. Step 6: Final answer
    x = 684.43

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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.