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Finding the Fourth Proportional to 744.51, 1,118.13 and 501.21

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Solution

The fourth proportional to 744.51, 1,118.13 and 501.21 is: 752.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    744.51 : 1,118.13 = 501.21 : x
  2. Step 2: Convert to fraction form
    744.51/1,118.13 = 501.21/x
  3. Step 3: Cross multiply
    744.51x = 1,118.13 × 501.21
  4. Step 4: Simplify right side
    744.51x = 560,417.94
  5. Step 5: Solve for x
    x = 560,417.94/744.51
  6. Step 6: Final answer
    x = 752.73

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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.