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Finding the Fourth Proportional to 959.91, 1,438.77 and 466.79

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Solution

The fourth proportional to 959.91, 1,438.77 and 466.79 is: 699.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.91 : 1,438.77 = 466.79 : x
  2. Step 2: Convert to fraction form
    959.91/1,438.77 = 466.79/x
  3. Step 3: Cross multiply
    959.91x = 1,438.77 × 466.79
  4. Step 4: Simplify right side
    959.91x = 671,605.29
  5. Step 5: Solve for x
    x = 671,605.29/959.91
  6. Step 6: Final answer
    x = 699.65

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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.