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Finding the Fourth Proportional to 740.53, 1,111.25 and 416.12

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Solution

The fourth proportional to 740.53, 1,111.25 and 416.12 is: 624.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.53 : 1,111.25 = 416.12 : x
  2. Step 2: Convert to fraction form
    740.53/1,111.25 = 416.12/x
  3. Step 3: Cross multiply
    740.53x = 1,111.25 × 416.12
  4. Step 4: Simplify right side
    740.53x = 462,415.08
  5. Step 5: Solve for x
    x = 462,415.08/740.53
  6. Step 6: Final answer
    x = 624.44

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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.