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Finding the Fourth Proportional to 1,116.60, 1,673.28 and 568.02

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Solution

The fourth proportional to 1,116.60, 1,673.28 and 568.02 is: 851.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.60 : 1,673.28 = 568.02 : x
  2. Step 2: Convert to fraction form
    1,116.60/1,673.28 = 568.02/x
  3. Step 3: Cross multiply
    1,116.60x = 1,673.28 × 568.02
  4. Step 4: Simplify right side
    1,116.60x = 950,456.51
  5. Step 5: Solve for x
    x = 950,456.51/1,116.60
  6. Step 6: Final answer
    x = 851.21

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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.