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Finding the Fourth Proportional to 951.25, 1,312.67 and 531.60

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Solution

The fourth proportional to 951.25, 1,312.67 and 531.60 is: 733.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.25 : 1,312.67 = 531.60 : x
  2. Step 2: Convert to fraction form
    951.25/1,312.67 = 531.60/x
  3. Step 3: Cross multiply
    951.25x = 1,312.67 × 531.60
  4. Step 4: Simplify right side
    951.25x = 697,815.37
  5. Step 5: Solve for x
    x = 697,815.37/951.25
  6. Step 6: Final answer
    x = 733.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.