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Finding the Fourth Proportional to 944.16, 1,302.90 and 551.22

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Solution

The fourth proportional to 944.16, 1,302.90 and 551.22 is: 760.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.16 : 1,302.90 = 551.22 : x
  2. Step 2: Convert to fraction form
    944.16/1,302.90 = 551.22/x
  3. Step 3: Cross multiply
    944.16x = 1,302.90 × 551.22
  4. Step 4: Simplify right side
    944.16x = 718,184.54
  5. Step 5: Solve for x
    x = 718,184.54/944.16
  6. Step 6: Final answer
    x = 760.66

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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.