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Finding the Fourth Proportional to 632.44, 948.30 and 339.58

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Solution

The fourth proportional to 632.44, 948.30 and 339.58 is: 509.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.44 : 948.30 = 339.58 : x
  2. Step 2: Convert to fraction form
    632.44/948.30 = 339.58/x
  3. Step 3: Cross multiply
    632.44x = 948.30 × 339.58
  4. Step 4: Simplify right side
    632.44x = 322,023.71
  5. Step 5: Solve for x
    x = 322,023.71/632.44
  6. Step 6: Final answer
    x = 509.18

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1.5x scale

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.