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Finding the Fourth Proportional to 427.53, 589.36 and 302.81

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Solution

The fourth proportional to 427.53, 589.36 and 302.81 is: 417.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    427.53 : 589.36 = 302.81 : x
  2. Step 2: Convert to fraction form
    427.53/589.36 = 302.81/x
  3. Step 3: Cross multiply
    427.53x = 589.36 × 302.81
  4. Step 4: Simplify right side
    427.53x = 178,464.10
  5. Step 5: Solve for x
    x = 178,464.10/427.53
  6. Step 6: Final answer
    x = 417.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.