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Finding the Fourth Proportional to 1,400.90, 1,933.20 and 877.22

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Solution

The fourth proportional to 1,400.90, 1,933.20 and 877.22 is: 1,210.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.90 : 1,933.20 = 877.22 : x
  2. Step 2: Convert to fraction form
    1,400.90/1,933.20 = 877.22/x
  3. Step 3: Cross multiply
    1,400.90x = 1,933.20 × 877.22
  4. Step 4: Simplify right side
    1,400.90x = 1,695,841.70
  5. Step 5: Solve for x
    x = 1,695,841.70/1,400.90
  6. Step 6: Final answer
    x = 1,210.54

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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.