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Finding the Fourth Proportional to 722.76, 997.80 and 548.88

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Solution

The fourth proportional to 722.76, 997.80 and 548.88 is: 757.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.76 : 997.80 = 548.88 : x
  2. Step 2: Convert to fraction form
    722.76/997.80 = 548.88/x
  3. Step 3: Cross multiply
    722.76x = 997.80 × 548.88
  4. Step 4: Simplify right side
    722.76x = 547,672.46
  5. Step 5: Solve for x
    x = 547,672.46/722.76
  6. Step 6: Final answer
    x = 757.75

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Find fourth proportional to 361.38, 498.90 and 274.44
Half scale
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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.