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Finding the Fourth Proportional to 1,110.02, 1,665.03 and 461.30

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Solution

The fourth proportional to 1,110.02, 1,665.03 and 461.30 is: 691.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.02 : 1,665.03 = 461.30 : x
  2. Step 2: Convert to fraction form
    1,110.02/1,665.03 = 461.30/x
  3. Step 3: Cross multiply
    1,110.02x = 1,665.03 × 461.30
  4. Step 4: Simplify right side
    1,110.02x = 768,078.34
  5. Step 5: Solve for x
    x = 768,078.34/1,110.02
  6. Step 6: Final answer
    x = 691.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.