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Finding the Fourth Proportional to 951.02, 1,426.67 and 431.01

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Solution

The fourth proportional to 951.02, 1,426.67 and 431.01 is: 646.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.02 : 1,426.67 = 431.01 : x
  2. Step 2: Convert to fraction form
    951.02/1,426.67 = 431.01/x
  3. Step 3: Cross multiply
    951.02x = 1,426.67 × 431.01
  4. Step 4: Simplify right side
    951.02x = 614,910.11
  5. Step 5: Solve for x
    x = 614,910.11/951.02
  6. Step 6: Final answer
    x = 646.58

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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.