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Finding the Fourth Proportional to 984.76, 1,359.03 and 565.11

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Solution

The fourth proportional to 984.76, 1,359.03 and 565.11 is: 779.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    984.76 : 1,359.03 = 565.11 : x
  2. Step 2: Convert to fraction form
    984.76/1,359.03 = 565.11/x
  3. Step 3: Cross multiply
    984.76x = 1,359.03 × 565.11
  4. Step 4: Simplify right side
    984.76x = 768,001.87
  5. Step 5: Solve for x
    x = 768,001.87/984.76
  6. Step 6: Final answer
    x = 779.88

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Double scale
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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.