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Finding the Fourth Proportional to 976.18, 1,346.88 and 583.24

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Solution

The fourth proportional to 976.18, 1,346.88 and 583.24 is: 804.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.18 : 1,346.88 = 583.24 : x
  2. Step 2: Convert to fraction form
    976.18/1,346.88 = 583.24/x
  3. Step 3: Cross multiply
    976.18x = 1,346.88 × 583.24
  4. Step 4: Simplify right side
    976.18x = 785,554.29
  5. Step 5: Solve for x
    x = 785,554.29/976.18
  6. Step 6: Final answer
    x = 804.72

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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.