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Finding the Fourth Proportional to 913.23, 1,370.42 and 502.62

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Solution

The fourth proportional to 913.23, 1,370.42 and 502.62 is: 754.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.23 : 1,370.42 = 502.62 : x
  2. Step 2: Convert to fraction form
    913.23/1,370.42 = 502.62/x
  3. Step 3: Cross multiply
    913.23x = 1,370.42 × 502.62
  4. Step 4: Simplify right side
    913.23x = 688,797.99
  5. Step 5: Solve for x
    x = 688,797.99/913.23
  6. Step 6: Final answer
    x = 754.24

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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.