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Finding the Fourth Proportional to 534.71, 802.12 and 144.72

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Solution

The fourth proportional to 534.71, 802.12 and 144.72 is: 217.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.71 : 802.12 = 144.72 : x
  2. Step 2: Convert to fraction form
    534.71/802.12 = 144.72/x
  3. Step 3: Cross multiply
    534.71x = 802.12 × 144.72
  4. Step 4: Simplify right side
    534.71x = 116,082.81
  5. Step 5: Solve for x
    x = 116,082.81/534.71
  6. Step 6: Final answer
    x = 217.09

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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.