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Finding the Fourth Proportional to 623.87, 930.52 and 531.53

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Solution

The fourth proportional to 623.87, 930.52 and 531.53 is: 792.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.87 : 930.52 = 531.53 : x
  2. Step 2: Convert to fraction form
    623.87/930.52 = 531.53/x
  3. Step 3: Cross multiply
    623.87x = 930.52 × 531.53
  4. Step 4: Simplify right side
    623.87x = 494,599.30
  5. Step 5: Solve for x
    x = 494,599.30/623.87
  6. Step 6: Final answer
    x = 792.79

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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.