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Finding the Fourth Proportional to 1,118.64, 1,676.13 and 570.07

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Solution

The fourth proportional to 1,118.64, 1,676.13 and 570.07 is: 854.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118.64 : 1,676.13 = 570.07 : x
  2. Step 2: Convert to fraction form
    1,118.64/1,676.13 = 570.07/x
  3. Step 3: Cross multiply
    1,118.64x = 1,676.13 × 570.07
  4. Step 4: Simplify right side
    1,118.64x = 955,511.43
  5. Step 5: Solve for x
    x = 955,511.43/1,118.64
  6. Step 6: Final answer
    x = 854.17

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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.