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Finding the Fourth Proportional to 548.76, 757.14 and 352.20

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Solution

The fourth proportional to 548.76, 757.14 and 352.20 is: 485.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.76 : 757.14 = 352.20 : x
  2. Step 2: Convert to fraction form
    548.76/757.14 = 352.20/x
  3. Step 3: Cross multiply
    548.76x = 757.14 × 352.20
  4. Step 4: Simplify right side
    548.76x = 266,664.71
  5. Step 5: Solve for x
    x = 266,664.71/548.76
  6. Step 6: Final answer
    x = 485.94

Related Problems

Find fourth proportional to 274.38, 378.57 and 176.10
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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.