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Finding the Fourth Proportional to 145.84, 219.12 and 127.84

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Solution

The fourth proportional to 145.84, 219.12 and 127.84 is: 192.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.84 : 219.12 = 127.84 : x
  2. Step 2: Convert to fraction form
    145.84/219.12 = 127.84/x
  3. Step 3: Cross multiply
    145.84x = 219.12 × 127.84
  4. Step 4: Simplify right side
    145.84x = 28,012.30
  5. Step 5: Solve for x
    x = 28,012.30/145.84
  6. Step 6: Final answer
    x = 192.08

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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.