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Finding the Fourth Proportional to 1,105.76, 1,525.50 and 633.58

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Solution

The fourth proportional to 1,105.76, 1,525.50 and 633.58 is: 874.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105.76 : 1,525.50 = 633.58 : x
  2. Step 2: Convert to fraction form
    1,105.76/1,525.50 = 633.58/x
  3. Step 3: Cross multiply
    1,105.76x = 1,525.50 × 633.58
  4. Step 4: Simplify right side
    1,105.76x = 966,526.29
  5. Step 5: Solve for x
    x = 966,526.29/1,105.76
  6. Step 6: Final answer
    x = 874.08

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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.