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Finding the Fourth Proportional to 1,164.11, 1,746.18 and 817.98

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Solution

The fourth proportional to 1,164.11, 1,746.18 and 817.98 is: 1,226.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,164.11 : 1,746.18 = 817.98 : x
  2. Step 2: Convert to fraction form
    1,164.11/1,746.18 = 817.98/x
  3. Step 3: Cross multiply
    1,164.11x = 1,746.18 × 817.98
  4. Step 4: Simplify right side
    1,164.11x = 1,428,336.23
  5. Step 5: Solve for x
    x = 1,428,336.23/1,164.11
  6. Step 6: Final answer
    x = 1,226.98

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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.