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Finding the Fourth Proportional to 959.56, 1,439.55 and 334.86

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Solution

The fourth proportional to 959.56, 1,439.55 and 334.86 is: 502.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.56 : 1,439.55 = 334.86 : x
  2. Step 2: Convert to fraction form
    959.56/1,439.55 = 334.86/x
  3. Step 3: Cross multiply
    959.56x = 1,439.55 × 334.86
  4. Step 4: Simplify right side
    959.56x = 482,047.71
  5. Step 5: Solve for x
    x = 482,047.71/959.56
  6. Step 6: Final answer
    x = 502.36

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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.