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Finding the Fourth Proportional to 1,623.34, 2,435.28 and 649.45

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Solution

The fourth proportional to 1,623.34, 2,435.28 and 649.45 is: 974.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,623.34 : 2,435.28 = 649.45 : x
  2. Step 2: Convert to fraction form
    1,623.34/2,435.28 = 649.45/x
  3. Step 3: Cross multiply
    1,623.34x = 2,435.28 × 649.45
  4. Step 4: Simplify right side
    1,623.34x = 1,581,592.60
  5. Step 5: Solve for x
    x = 1,581,592.60/1,623.34
  6. Step 6: Final answer
    x = 974.28

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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.