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Finding the Fourth Proportional to 949.88, 1,310.82 and 530.24

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Solution

The fourth proportional to 949.88, 1,310.82 and 530.24 is: 731.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.88 : 1,310.82 = 530.24 : x
  2. Step 2: Convert to fraction form
    949.88/1,310.82 = 530.24/x
  3. Step 3: Cross multiply
    949.88x = 1,310.82 × 530.24
  4. Step 4: Simplify right side
    949.88x = 695,049.20
  5. Step 5: Solve for x
    x = 695,049.20/949.88
  6. Step 6: Final answer
    x = 731.72

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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.