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Finding the Fourth Proportional to 1,177.83, 1,625.37 and 646.70

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Solution

The fourth proportional to 1,177.83, 1,625.37 and 646.70 is: 892.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.83 : 1,625.37 = 646.70 : x
  2. Step 2: Convert to fraction form
    1,177.83/1,625.37 = 646.70/x
  3. Step 3: Cross multiply
    1,177.83x = 1,625.37 × 646.70
  4. Step 4: Simplify right side
    1,177.83x = 1,051,118.65
  5. Step 5: Solve for x
    x = 1,051,118.65/1,177.83
  6. Step 6: Final answer
    x = 892.42

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1.5x scale

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.