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Finding the Fourth Proportional to 741.61, 1,111.20 and 524.13

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Solution

The fourth proportional to 741.61, 1,111.20 and 524.13 is: 785.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.61 : 1,111.20 = 524.13 : x
  2. Step 2: Convert to fraction form
    741.61/1,111.20 = 524.13/x
  3. Step 3: Cross multiply
    741.61x = 1,111.20 × 524.13
  4. Step 4: Simplify right side
    741.61x = 582,413.26
  5. Step 5: Solve for x
    x = 582,413.26/741.61
  6. Step 6: Final answer
    x = 785.34

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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.