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Finding the Fourth Proportional to 950.90, 1,312.27 and 531.23

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Solution

The fourth proportional to 950.90, 1,312.27 and 531.23 is: 733.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.90 : 1,312.27 = 531.23 : x
  2. Step 2: Convert to fraction form
    950.90/1,312.27 = 531.23/x
  3. Step 3: Cross multiply
    950.90x = 1,312.27 × 531.23
  4. Step 4: Simplify right side
    950.90x = 697,109.30
  5. Step 5: Solve for x
    x = 697,109.30/950.90
  6. Step 6: Final answer
    x = 733.11

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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.