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Finding the Fourth Proportional to 1,184.80, 1,635.03 and 653.70

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Solution

The fourth proportional to 1,184.80, 1,635.03 and 653.70 is: 902.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,184.80 : 1,635.03 = 653.70 : x
  2. Step 2: Convert to fraction form
    1,184.80/1,635.03 = 653.70/x
  3. Step 3: Cross multiply
    1,184.80x = 1,635.03 × 653.70
  4. Step 4: Simplify right side
    1,184.80x = 1,068,819.11
  5. Step 5: Solve for x
    x = 1,068,819.11/1,184.80
  6. Step 6: Final answer
    x = 902.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.