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Finding the Fourth Proportional to 975.02, 1,461.87 and 454.75

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Solution

The fourth proportional to 975.02, 1,461.87 and 454.75 is: 681.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    975.02 : 1,461.87 = 454.75 : x
  2. Step 2: Convert to fraction form
    975.02/1,461.87 = 454.75/x
  3. Step 3: Cross multiply
    975.02x = 1,461.87 × 454.75
  4. Step 4: Simplify right side
    975.02x = 664,781.73
  5. Step 5: Solve for x
    x = 664,781.73/975.02
  6. Step 6: Final answer
    x = 681.82

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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.