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Finding the Fourth Proportional to 741.65, 1,110.98 and 384.84

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Solution

The fourth proportional to 741.65, 1,110.98 and 384.84 is: 576.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.65 : 1,110.98 = 384.84 : x
  2. Step 2: Convert to fraction form
    741.65/1,110.98 = 384.84/x
  3. Step 3: Cross multiply
    741.65x = 1,110.98 × 384.84
  4. Step 4: Simplify right side
    741.65x = 427,549.54
  5. Step 5: Solve for x
    x = 427,549.54/741.65
  6. Step 6: Final answer
    x = 576.48

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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.