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Finding the Fourth Proportional to 1,636.60, 2,451.90 and 907.06

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Solution

The fourth proportional to 1,636.60, 2,451.90 and 907.06 is: 1,358.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.60 : 2,451.90 = 907.06 : x
  2. Step 2: Convert to fraction form
    1,636.60/2,451.90 = 907.06/x
  3. Step 3: Cross multiply
    1,636.60x = 2,451.90 × 907.06
  4. Step 4: Simplify right side
    1,636.60x = 2,224,020.41
  5. Step 5: Solve for x
    x = 2,224,020.41/1,636.60
  6. Step 6: Final answer
    x = 1,358.93

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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.