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Finding the Fourth Proportional to 976.24, 1,345.26 and 695.69

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Solution

The fourth proportional to 976.24, 1,345.26 and 695.69 is: 958.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.24 : 1,345.26 = 695.69 : x
  2. Step 2: Convert to fraction form
    976.24/1,345.26 = 695.69/x
  3. Step 3: Cross multiply
    976.24x = 1,345.26 × 695.69
  4. Step 4: Simplify right side
    976.24x = 935,887.29
  5. Step 5: Solve for x
    x = 935,887.29/976.24
  6. Step 6: Final answer
    x = 958.67

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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.