Home / 1,177.54-1,766.88-561.80

Finding the Fourth Proportional to 1,177.54, 1,766.88 and 561.80

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Solution

The fourth proportional to 1,177.54, 1,766.88 and 561.80 is: 842.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.54 : 1,766.88 = 561.80 : x
  2. Step 2: Convert to fraction form
    1,177.54/1,766.88 = 561.80/x
  3. Step 3: Cross multiply
    1,177.54x = 1,766.88 × 561.80
  4. Step 4: Simplify right side
    1,177.54x = 992,637.60
  5. Step 5: Solve for x
    x = 992,637.60/1,177.54
  6. Step 6: Final answer
    x = 842.98

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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.