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Finding the Fourth Proportional to 628.84, 866.82 and 602.92

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Solution

The fourth proportional to 628.84, 866.82 and 602.92 is: 831.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.84 : 866.82 = 602.92 : x
  2. Step 2: Convert to fraction form
    628.84/866.82 = 602.92/x
  3. Step 3: Cross multiply
    628.84x = 866.82 × 602.92
  4. Step 4: Simplify right side
    628.84x = 522,623.11
  5. Step 5: Solve for x
    x = 522,623.11/628.84
  6. Step 6: Final answer
    x = 831.09

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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.