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Finding the Fourth Proportional to 740.90, 1,110.29 and 544.36

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Solution

The fourth proportional to 740.90, 1,110.29 and 544.36 is: 815.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.90 : 1,110.29 = 544.36 : x
  2. Step 2: Convert to fraction form
    740.90/1,110.29 = 544.36/x
  3. Step 3: Cross multiply
    740.90x = 1,110.29 × 544.36
  4. Step 4: Simplify right side
    740.90x = 604,396.05
  5. Step 5: Solve for x
    x = 604,396.05/740.90
  6. Step 6: Final answer
    x = 815.76

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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.