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Finding the Fourth Proportional to 1,457.29, 2,185.92 and 624.23

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Solution

The fourth proportional to 1,457.29, 2,185.92 and 624.23 is: 936.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457.29 : 2,185.92 = 624.23 : x
  2. Step 2: Convert to fraction form
    1,457.29/2,185.92 = 624.23/x
  3. Step 3: Cross multiply
    1,457.29x = 2,185.92 × 624.23
  4. Step 4: Simplify right side
    1,457.29x = 1,364,505.91
  5. Step 5: Solve for x
    x = 1,364,505.91/1,457.29
  6. Step 6: Final answer
    x = 936.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.