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Finding the Fourth Proportional to 630.05, 867.71 and 551.07

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Solution

The fourth proportional to 630.05, 867.71 and 551.07 is: 758.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.05 : 867.71 = 551.07 : x
  2. Step 2: Convert to fraction form
    630.05/867.71 = 551.07/x
  3. Step 3: Cross multiply
    630.05x = 867.71 × 551.07
  4. Step 4: Simplify right side
    630.05x = 478,170.33
  5. Step 5: Solve for x
    x = 478,170.33/630.05
  6. Step 6: Final answer
    x = 758.95

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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.