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Finding the Fourth Proportional to 795.21, 1,191.60 and 383.85

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Solution

The fourth proportional to 795.21, 1,191.60 and 383.85 is: 575.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    795.21 : 1,191.60 = 383.85 : x
  2. Step 2: Convert to fraction form
    795.21/1,191.60 = 383.85/x
  3. Step 3: Cross multiply
    795.21x = 1,191.60 × 383.85
  4. Step 4: Simplify right side
    795.21x = 457,395.66
  5. Step 5: Solve for x
    x = 457,395.66/795.21
  6. Step 6: Final answer
    x = 575.19

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Double scale
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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.