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Finding the Fourth Proportional to 1,522.50, 2,101.08 and 901.50

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Solution

The fourth proportional to 1,522.50, 2,101.08 and 901.50 is: 1,244.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,522.50 : 2,101.08 = 901.50 : x
  2. Step 2: Convert to fraction form
    1,522.50/2,101.08 = 901.50/x
  3. Step 3: Cross multiply
    1,522.50x = 2,101.08 × 901.50
  4. Step 4: Simplify right side
    1,522.50x = 1,894,123.62
  5. Step 5: Solve for x
    x = 1,894,123.62/1,522.50
  6. Step 6: Final answer
    x = 1,244.09

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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.