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Finding the Fourth Proportional to 742.39, 1,111.75 and 595.10

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Solution

The fourth proportional to 742.39, 1,111.75 and 595.10 is: 891.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    742.39 : 1,111.75 = 595.10 : x
  2. Step 2: Convert to fraction form
    742.39/1,111.75 = 595.10/x
  3. Step 3: Cross multiply
    742.39x = 1,111.75 × 595.10
  4. Step 4: Simplify right side
    742.39x = 661,602.43
  5. Step 5: Solve for x
    x = 661,602.43/742.39
  6. Step 6: Final answer
    x = 891.18

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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.