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Finding the Fourth Proportional to 282.95, 424.53 and 120.76

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Solution

The fourth proportional to 282.95, 424.53 and 120.76 is: 181.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.95 : 424.53 = 120.76 : x
  2. Step 2: Convert to fraction form
    282.95/424.53 = 120.76/x
  3. Step 3: Cross multiply
    282.95x = 424.53 × 120.76
  4. Step 4: Simplify right side
    282.95x = 51,266.24
  5. Step 5: Solve for x
    x = 51,266.24/282.95
  6. Step 6: Final answer
    x = 181.18

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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.