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Finding the Fourth Proportional to 962.83, 1,328.40 and 589.42

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Solution

The fourth proportional to 962.83, 1,328.40 and 589.42 is: 813.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.83 : 1,328.40 = 589.42 : x
  2. Step 2: Convert to fraction form
    962.83/1,328.40 = 589.42/x
  3. Step 3: Cross multiply
    962.83x = 1,328.40 × 589.42
  4. Step 4: Simplify right side
    962.83x = 782,982.21
  5. Step 5: Solve for x
    x = 782,982.21/962.83
  6. Step 6: Final answer
    x = 813.21

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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.