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Finding the Fourth Proportional to 966.76, 1,334.19 and 547.15

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Solution

The fourth proportional to 966.76, 1,334.19 and 547.15 is: 755.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.76 : 1,334.19 = 547.15 : x
  2. Step 2: Convert to fraction form
    966.76/1,334.19 = 547.15/x
  3. Step 3: Cross multiply
    966.76x = 1,334.19 × 547.15
  4. Step 4: Simplify right side
    966.76x = 730,004.03
  5. Step 5: Solve for x
    x = 730,004.03/966.76
  6. Step 6: Final answer
    x = 755.11

Related Problems

Find fourth proportional to 483.38, 667.09 and 273.58
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.