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Finding the Fourth Proportional to 717.63, 989.11 and 592.89

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Solution

The fourth proportional to 717.63, 989.11 and 592.89 is: 817.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.63 : 989.11 = 592.89 : x
  2. Step 2: Convert to fraction form
    717.63/989.11 = 592.89/x
  3. Step 3: Cross multiply
    717.63x = 989.11 × 592.89
  4. Step 4: Simplify right side
    717.63x = 586,433.43
  5. Step 5: Solve for x
    x = 586,433.43/717.63
  6. Step 6: Final answer
    x = 817.18

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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.