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Finding the Fourth Proportional to 951.88, 1,428 and 302.56

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Solution

The fourth proportional to 951.88, 1,428 and 302.56 is: 453.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.88 : 1,428 = 302.56 : x
  2. Step 2: Convert to fraction form
    951.88/1,428 = 302.56/x
  3. Step 3: Cross multiply
    951.88x = 1,428 × 302.56
  4. Step 4: Simplify right side
    951.88x = 432,055.68
  5. Step 5: Solve for x
    x = 432,055.68/951.88
  6. Step 6: Final answer
    x = 453.90

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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.