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Finding the Fourth Proportional to 555.35, 833.18 and 494.90

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Solution

The fourth proportional to 555.35, 833.18 and 494.90 is: 742.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.35 : 833.18 = 494.90 : x
  2. Step 2: Convert to fraction form
    555.35/833.18 = 494.90/x
  3. Step 3: Cross multiply
    555.35x = 833.18 × 494.90
  4. Step 4: Simplify right side
    555.35x = 412,340.78
  5. Step 5: Solve for x
    x = 412,340.78/555.35
  6. Step 6: Final answer
    x = 742.49

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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.