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Finding the Fourth Proportional to 951.51, 1,425.18 and 785.11

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Solution

The fourth proportional to 951.51, 1,425.18 and 785.11 is: 1,175.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.51 : 1,425.18 = 785.11 : x
  2. Step 2: Convert to fraction form
    951.51/1,425.18 = 785.11/x
  3. Step 3: Cross multiply
    951.51x = 1,425.18 × 785.11
  4. Step 4: Simplify right side
    951.51x = 1,118,923.07
  5. Step 5: Solve for x
    x = 1,118,923.07/951.51
  6. Step 6: Final answer
    x = 1,175.94

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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.