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Finding the Fourth Proportional to 959.53, 1,324.11 and 587.13

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Solution

The fourth proportional to 959.53, 1,324.11 and 587.13 is: 810.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.53 : 1,324.11 = 587.13 : x
  2. Step 2: Convert to fraction form
    959.53/1,324.11 = 587.13/x
  3. Step 3: Cross multiply
    959.53x = 1,324.11 × 587.13
  4. Step 4: Simplify right side
    959.53x = 777,424.70
  5. Step 5: Solve for x
    x = 777,424.70/959.53
  6. Step 6: Final answer
    x = 810.21

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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.