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Finding the Fourth Proportional to 741.76, 1,111.62 and 559.00

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Solution

The fourth proportional to 741.76, 1,111.62 and 559.00 is: 837.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.76 : 1,111.62 = 559.00 : x
  2. Step 2: Convert to fraction form
    741.76/1,111.62 = 559.00/x
  3. Step 3: Cross multiply
    741.76x = 1,111.62 × 559.00
  4. Step 4: Simplify right side
    741.76x = 621,399.07
  5. Step 5: Solve for x
    x = 621,399.07/741.76
  6. Step 6: Final answer
    x = 837.74

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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.