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Finding the Fourth Proportional to 730.65, 1,008.48 and 531.57

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Solution

The fourth proportional to 730.65, 1,008.48 and 531.57 is: 733.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.65 : 1,008.48 = 531.57 : x
  2. Step 2: Convert to fraction form
    730.65/1,008.48 = 531.57/x
  3. Step 3: Cross multiply
    730.65x = 1,008.48 × 531.57
  4. Step 4: Simplify right side
    730.65x = 536,077.71
  5. Step 5: Solve for x
    x = 536,077.71/730.65
  6. Step 6: Final answer
    x = 733.70

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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.