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Finding the Fourth Proportional to 976.24, 1,346.70 and 583.12

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Solution

The fourth proportional to 976.24, 1,346.70 and 583.12 is: 804.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.24 : 1,346.70 = 583.12 : x
  2. Step 2: Convert to fraction form
    976.24/1,346.70 = 583.12/x
  3. Step 3: Cross multiply
    976.24x = 1,346.70 × 583.12
  4. Step 4: Simplify right side
    976.24x = 785,287.70
  5. Step 5: Solve for x
    x = 785,287.70/976.24
  6. Step 6: Final answer
    x = 804.40

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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.