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Finding the Fourth Proportional to 962.91, 1,444.38 and 313.71

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Solution

The fourth proportional to 962.91, 1,444.38 and 313.71 is: 470.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.91 : 1,444.38 = 313.71 : x
  2. Step 2: Convert to fraction form
    962.91/1,444.38 = 313.71/x
  3. Step 3: Cross multiply
    962.91x = 1,444.38 × 313.71
  4. Step 4: Simplify right side
    962.91x = 453,116.45
  5. Step 5: Solve for x
    x = 453,116.45/962.91
  6. Step 6: Final answer
    x = 470.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.