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Finding the Fourth Proportional to 534.99, 802.02 and 315.38

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Solution

The fourth proportional to 534.99, 802.02 and 315.38 is: 472.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.99 : 802.02 = 315.38 : x
  2. Step 2: Convert to fraction form
    534.99/802.02 = 315.38/x
  3. Step 3: Cross multiply
    534.99x = 802.02 × 315.38
  4. Step 4: Simplify right side
    534.99x = 252,937.06
  5. Step 5: Solve for x
    x = 252,937.06/534.99
  6. Step 6: Final answer
    x = 472.79

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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.