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Finding the Fourth Proportional to 1,106.88, 1,526.80 and 885.52

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Solution

The fourth proportional to 1,106.88, 1,526.80 and 885.52 is: 1,221.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,106.88 : 1,526.80 = 885.52 : x
  2. Step 2: Convert to fraction form
    1,106.88/1,526.80 = 885.52/x
  3. Step 3: Cross multiply
    1,106.88x = 1,526.80 × 885.52
  4. Step 4: Simplify right side
    1,106.88x = 1,352,011.94
  5. Step 5: Solve for x
    x = 1,352,011.94/1,106.88
  6. Step 6: Final answer
    x = 1,221.46

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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.