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Finding the Fourth Proportional to 1,762.71, 2,644.25 and 652.42

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Solution

The fourth proportional to 1,762.71, 2,644.25 and 652.42 is: 978.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,762.71 : 2,644.25 = 652.42 : x
  2. Step 2: Convert to fraction form
    1,762.71/2,644.25 = 652.42/x
  3. Step 3: Cross multiply
    1,762.71x = 2,644.25 × 652.42
  4. Step 4: Simplify right side
    1,762.71x = 1,725,151.71
  5. Step 5: Solve for x
    x = 1,725,151.71/1,762.71
  6. Step 6: Final answer
    x = 978.69

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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.