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Finding the Fourth Proportional to 876.02, 1,310.99 and 630.59

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Solution

The fourth proportional to 876.02, 1,310.99 and 630.59 is: 943.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    876.02 : 1,310.99 = 630.59 : x
  2. Step 2: Convert to fraction form
    876.02/1,310.99 = 630.59/x
  3. Step 3: Cross multiply
    876.02x = 1,310.99 × 630.59
  4. Step 4: Simplify right side
    876.02x = 826,687.48
  5. Step 5: Solve for x
    x = 826,687.48/876.02
  6. Step 6: Final answer
    x = 943.69

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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.