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Finding the Fourth Proportional to 668.74, 999.41 and 537.30

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Solution

The fourth proportional to 668.74, 999.41 and 537.30 is: 802.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.74 : 999.41 = 537.30 : x
  2. Step 2: Convert to fraction form
    668.74/999.41 = 537.30/x
  3. Step 3: Cross multiply
    668.74x = 999.41 × 537.30
  4. Step 4: Simplify right side
    668.74x = 536,980.62
  5. Step 5: Solve for x
    x = 536,980.62/668.74
  6. Step 6: Final answer
    x = 802.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.