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Finding the Fourth Proportional to 561.88, 842.82 and 345.34

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Solution

The fourth proportional to 561.88, 842.82 and 345.34 is: 518.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.88 : 842.82 = 345.34 : x
  2. Step 2: Convert to fraction form
    561.88/842.82 = 345.34/x
  3. Step 3: Cross multiply
    561.88x = 842.82 × 345.34
  4. Step 4: Simplify right side
    561.88x = 291,059.46
  5. Step 5: Solve for x
    x = 291,059.46/561.88
  6. Step 6: Final answer
    x = 518.01

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Double scale
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Similar ratio
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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.