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Finding the Fourth Proportional to 944.06, 1,415.48 and 578.34

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Solution

The fourth proportional to 944.06, 1,415.48 and 578.34 is: 867.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.06 : 1,415.48 = 578.34 : x
  2. Step 2: Convert to fraction form
    944.06/1,415.48 = 578.34/x
  3. Step 3: Cross multiply
    944.06x = 1,415.48 × 578.34
  4. Step 4: Simplify right side
    944.06x = 818,625.81
  5. Step 5: Solve for x
    x = 818,625.81/944.06
  6. Step 6: Final answer
    x = 867.14

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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.