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Finding the Fourth Proportional to 561.03, 774.61 and 374.73

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Solution

The fourth proportional to 561.03, 774.61 and 374.73 is: 517.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.03 : 774.61 = 374.73 : x
  2. Step 2: Convert to fraction form
    561.03/774.61 = 374.73/x
  3. Step 3: Cross multiply
    561.03x = 774.61 × 374.73
  4. Step 4: Simplify right side
    561.03x = 290,269.61
  5. Step 5: Solve for x
    x = 290,269.61/561.03
  6. Step 6: Final answer
    x = 517.39

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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.