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Finding the Fourth Proportional to 849.16, 1,171.04 and 565.45

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Solution

The fourth proportional to 849.16, 1,171.04 and 565.45 is: 779.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    849.16 : 1,171.04 = 565.45 : x
  2. Step 2: Convert to fraction form
    849.16/1,171.04 = 565.45/x
  3. Step 3: Cross multiply
    849.16x = 1,171.04 × 565.45
  4. Step 4: Simplify right side
    849.16x = 662,158.71
  5. Step 5: Solve for x
    x = 662,158.71/849.16
  6. Step 6: Final answer
    x = 779.79

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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.