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Finding the Fourth Proportional to 623.27, 860.08 and 357.53

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Solution

The fourth proportional to 623.27, 860.08 and 357.53 is: 493.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.27 : 860.08 = 357.53 : x
  2. Step 2: Convert to fraction form
    623.27/860.08 = 357.53/x
  3. Step 3: Cross multiply
    623.27x = 860.08 × 357.53
  4. Step 4: Simplify right side
    623.27x = 307,501.59
  5. Step 5: Solve for x
    x = 307,501.59/623.27
  6. Step 6: Final answer
    x = 493.37

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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.