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Finding the Fourth Proportional to 1,697.63, 2,547.21 and 1,005.66

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Solution

The fourth proportional to 1,697.63, 2,547.21 and 1,005.66 is: 1,508.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,697.63 : 2,547.21 = 1,005.66 : x
  2. Step 2: Convert to fraction form
    1,697.63/2,547.21 = 1,005.66/x
  3. Step 3: Cross multiply
    1,697.63x = 2,547.21 × 1,005.66
  4. Step 4: Simplify right side
    1,697.63x = 2,561,627.21
  5. Step 5: Solve for x
    x = 2,561,627.21/1,697.63
  6. Step 6: Final answer
    x = 1,508.95

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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.