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Finding the Fourth Proportional to 750.72, 1,126.08 and 492.35

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Solution

The fourth proportional to 750.72, 1,126.08 and 492.35 is: 738.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.72 : 1,126.08 = 492.35 : x
  2. Step 2: Convert to fraction form
    750.72/1,126.08 = 492.35/x
  3. Step 3: Cross multiply
    750.72x = 1,126.08 × 492.35
  4. Step 4: Simplify right side
    750.72x = 554,430.05
  5. Step 5: Solve for x
    x = 554,430.05/750.72
  6. Step 6: Final answer
    x = 738.53

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