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Finding the Fourth Proportional to 1,627.57, 2,440.54 and 652.87

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Solution

The fourth proportional to 1,627.57, 2,440.54 and 652.87 is: 978.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627.57 : 2,440.54 = 652.87 : x
  2. Step 2: Convert to fraction form
    1,627.57/2,440.54 = 652.87/x
  3. Step 3: Cross multiply
    1,627.57x = 2,440.54 × 652.87
  4. Step 4: Simplify right side
    1,627.57x = 1,593,355.35
  5. Step 5: Solve for x
    x = 1,593,355.35/1,627.57
  6. Step 6: Final answer
    x = 978.98

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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.