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Finding the Fourth Proportional to 304.72, 419.77 and 242.53

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Solution

The fourth proportional to 304.72, 419.77 and 242.53 is: 334.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.72 : 419.77 = 242.53 : x
  2. Step 2: Convert to fraction form
    304.72/419.77 = 242.53/x
  3. Step 3: Cross multiply
    304.72x = 419.77 × 242.53
  4. Step 4: Simplify right side
    304.72x = 101,806.82
  5. Step 5: Solve for x
    x = 101,806.82/304.72
  6. Step 6: Final answer
    x = 334.10

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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.