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Finding the Fourth Proportional to 969.46, 1,337.92 and 591.51

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Solution

The fourth proportional to 969.46, 1,337.92 and 591.51 is: 816.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    969.46 : 1,337.92 = 591.51 : x
  2. Step 2: Convert to fraction form
    969.46/1,337.92 = 591.51/x
  3. Step 3: Cross multiply
    969.46x = 1,337.92 × 591.51
  4. Step 4: Simplify right side
    969.46x = 791,393.06
  5. Step 5: Solve for x
    x = 791,393.06/969.46
  6. Step 6: Final answer
    x = 816.32

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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.