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Finding the Fourth Proportional to 561.44, 841.74 and 355.97

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Solution

The fourth proportional to 561.44, 841.74 and 355.97 is: 533.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.44 : 841.74 = 355.97 : x
  2. Step 2: Convert to fraction form
    561.44/841.74 = 355.97/x
  3. Step 3: Cross multiply
    561.44x = 841.74 × 355.97
  4. Step 4: Simplify right side
    561.44x = 299,629.98
  5. Step 5: Solve for x
    x = 299,629.98/561.44
  6. Step 6: Final answer
    x = 533.69

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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.