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Finding the Fourth Proportional to 1,714.64, 2,570.34 and 618.71

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Solution

The fourth proportional to 1,714.64, 2,570.34 and 618.71 is: 927.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,714.64 : 2,570.34 = 618.71 : x
  2. Step 2: Convert to fraction form
    1,714.64/2,570.34 = 618.71/x
  3. Step 3: Cross multiply
    1,714.64x = 2,570.34 × 618.71
  4. Step 4: Simplify right side
    1,714.64x = 1,590,295.06
  5. Step 5: Solve for x
    x = 1,590,295.06/1,714.64
  6. Step 6: Final answer
    x = 927.48

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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.