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Finding the Fourth Proportional to 547.41, 821.21 and 273.51

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Solution

The fourth proportional to 547.41, 821.21 and 273.51 is: 410.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.41 : 821.21 = 273.51 : x
  2. Step 2: Convert to fraction form
    547.41/821.21 = 273.51/x
  3. Step 3: Cross multiply
    547.41x = 821.21 × 273.51
  4. Step 4: Simplify right side
    547.41x = 224,607.78
  5. Step 5: Solve for x
    x = 224,607.78/547.41
  6. Step 6: Final answer
    x = 410.31

Related Problems

Find fourth proportional to 273.71, 410.60 and 136.76
Half scale
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Double scale
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Similar ratio
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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.