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Finding the Fourth Proportional to 756.55, 1,132.77 and 589.20

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Solution

The fourth proportional to 756.55, 1,132.77 and 589.20 is: 882.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.55 : 1,132.77 = 589.20 : x
  2. Step 2: Convert to fraction form
    756.55/1,132.77 = 589.20/x
  3. Step 3: Cross multiply
    756.55x = 1,132.77 × 589.20
  4. Step 4: Simplify right side
    756.55x = 667,428.40
  5. Step 5: Solve for x
    x = 667,428.40/756.55
  6. Step 6: Final answer
    x = 882.20

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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.