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Finding the Fourth Proportional to 785.52, 1,177.44 and 374.40

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Solution

The fourth proportional to 785.52, 1,177.44 and 374.40 is: 561.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    785.52 : 1,177.44 = 374.40 : x
  2. Step 2: Convert to fraction form
    785.52/1,177.44 = 374.40/x
  3. Step 3: Cross multiply
    785.52x = 1,177.44 × 374.40
  4. Step 4: Simplify right side
    785.52x = 440,833.54
  5. Step 5: Solve for x
    x = 440,833.54/785.52
  6. Step 6: Final answer
    x = 561.20

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1.5x scale

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.