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Finding the Fourth Proportional to 948.44, 1,421.94 and 460.46

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Solution

The fourth proportional to 948.44, 1,421.94 and 460.46 is: 690.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    948.44 : 1,421.94 = 460.46 : x
  2. Step 2: Convert to fraction form
    948.44/1,421.94 = 460.46/x
  3. Step 3: Cross multiply
    948.44x = 1,421.94 × 460.46
  4. Step 4: Simplify right side
    948.44x = 654,746.49
  5. Step 5: Solve for x
    x = 654,746.49/948.44
  6. Step 6: Final answer
    x = 690.34

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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.