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Finding the Fourth Proportional to 753.01, 1,039.75 and 501.18

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Solution

The fourth proportional to 753.01, 1,039.75 and 501.18 is: 692.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    753.01 : 1,039.75 = 501.18 : x
  2. Step 2: Convert to fraction form
    753.01/1,039.75 = 501.18/x
  3. Step 3: Cross multiply
    753.01x = 1,039.75 × 501.18
  4. Step 4: Simplify right side
    753.01x = 521,103.47
  5. Step 5: Solve for x
    x = 521,103.47/753.01
  6. Step 6: Final answer
    x = 692.03

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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.