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Finding the Fourth Proportional to 632.60, 948.98 and 339.70

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Solution

The fourth proportional to 632.60, 948.98 and 339.70 is: 509.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.60 : 948.98 = 339.70 : x
  2. Step 2: Convert to fraction form
    632.60/948.98 = 339.70/x
  3. Step 3: Cross multiply
    632.60x = 948.98 × 339.70
  4. Step 4: Simplify right side
    632.60x = 322,369.36
  5. Step 5: Solve for x
    x = 322,369.36/632.60
  6. Step 6: Final answer
    x = 509.59

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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.