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Finding the Fourth Proportional to 976.21, 1,347.18 and 534.09

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Solution

The fourth proportional to 976.21, 1,347.18 and 534.09 is: 737.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.21 : 1,347.18 = 534.09 : x
  2. Step 2: Convert to fraction form
    976.21/1,347.18 = 534.09/x
  3. Step 3: Cross multiply
    976.21x = 1,347.18 × 534.09
  4. Step 4: Simplify right side
    976.21x = 719,515.37
  5. Step 5: Solve for x
    x = 719,515.37/976.21
  6. Step 6: Final answer
    x = 737.05

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Double scale
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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.