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Finding the Fourth Proportional to 976.32, 1,347.35 and 534.25

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Solution

The fourth proportional to 976.32, 1,347.35 and 534.25 is: 737.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.32 : 1,347.35 = 534.25 : x
  2. Step 2: Convert to fraction form
    976.32/1,347.35 = 534.25/x
  3. Step 3: Cross multiply
    976.32x = 1,347.35 × 534.25
  4. Step 4: Simplify right side
    976.32x = 719,821.74
  5. Step 5: Solve for x
    x = 719,821.74/976.32
  6. Step 6: Final answer
    x = 737.28

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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.