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Finding the Fourth Proportional to 943.95, 1,302.81 and 551.19

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Solution

The fourth proportional to 943.95, 1,302.81 and 551.19 is: 760.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.95 : 1,302.81 = 551.19 : x
  2. Step 2: Convert to fraction form
    943.95/1,302.81 = 551.19/x
  3. Step 3: Cross multiply
    943.95x = 1,302.81 × 551.19
  4. Step 4: Simplify right side
    943.95x = 718,095.84
  5. Step 5: Solve for x
    x = 718,095.84/943.95
  6. Step 6: Final answer
    x = 760.74

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Double scale
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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.