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Finding the Fourth Proportional to 836.82, 1,155.18 and 500.84

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Solution

The fourth proportional to 836.82, 1,155.18 and 500.84 is: 691.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.82 : 1,155.18 = 500.84 : x
  2. Step 2: Convert to fraction form
    836.82/1,155.18 = 500.84/x
  3. Step 3: Cross multiply
    836.82x = 1,155.18 × 500.84
  4. Step 4: Simplify right side
    836.82x = 578,560.35
  5. Step 5: Solve for x
    x = 578,560.35/836.82
  6. Step 6: Final answer
    x = 691.38

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Double scale
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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.