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Finding the Fourth Proportional to 717.02, 990.03 and 576.68

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Solution

The fourth proportional to 717.02, 990.03 and 576.68 is: 796.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.02 : 990.03 = 576.68 : x
  2. Step 2: Convert to fraction form
    717.02/990.03 = 576.68/x
  3. Step 3: Cross multiply
    717.02x = 990.03 × 576.68
  4. Step 4: Simplify right side
    717.02x = 570,925.55
  5. Step 5: Solve for x
    x = 570,925.55/717.02
  6. Step 6: Final answer
    x = 796.25

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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.