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Finding the Fourth Proportional to 962.76, 1,328.60 and 548.76

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Solution

The fourth proportional to 962.76, 1,328.60 and 548.76 is: 757.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.76 : 1,328.60 = 548.76 : x
  2. Step 2: Convert to fraction form
    962.76/1,328.60 = 548.76/x
  3. Step 3: Cross multiply
    962.76x = 1,328.60 × 548.76
  4. Step 4: Simplify right side
    962.76x = 729,082.54
  5. Step 5: Solve for x
    x = 729,082.54/962.76
  6. Step 6: Final answer
    x = 757.28

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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.