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Finding the Fourth Proportional to 1,636.17, 2,454.42 and 525.31

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Solution

The fourth proportional to 1,636.17, 2,454.42 and 525.31 is: 788.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.17 : 2,454.42 = 525.31 : x
  2. Step 2: Convert to fraction form
    1,636.17/2,454.42 = 525.31/x
  3. Step 3: Cross multiply
    1,636.17x = 2,454.42 × 525.31
  4. Step 4: Simplify right side
    1,636.17x = 1,289,322.77
  5. Step 5: Solve for x
    x = 1,289,322.77/1,636.17
  6. Step 6: Final answer
    x = 788.01

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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.