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Finding the Fourth Proportional to 623.34, 930.42 and 531.36

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Solution

The fourth proportional to 623.34, 930.42 and 531.36 is: 793.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.34 : 930.42 = 531.36 : x
  2. Step 2: Convert to fraction form
    623.34/930.42 = 531.36/x
  3. Step 3: Cross multiply
    623.34x = 930.42 × 531.36
  4. Step 4: Simplify right side
    623.34x = 494,387.97
  5. Step 5: Solve for x
    x = 494,387.97/623.34
  6. Step 6: Final answer
    x = 793.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.