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Finding the Fourth Proportional to 973.76, 1,344.12 and 659.12

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Solution

The fourth proportional to 973.76, 1,344.12 and 659.12 is: 909.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    973.76 : 1,344.12 = 659.12 : x
  2. Step 2: Convert to fraction form
    973.76/1,344.12 = 659.12/x
  3. Step 3: Cross multiply
    973.76x = 1,344.12 × 659.12
  4. Step 4: Simplify right side
    973.76x = 885,936.37
  5. Step 5: Solve for x
    x = 885,936.37/973.76
  6. Step 6: Final answer
    x = 909.81

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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.