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Finding the Fourth Proportional to 534.54, 802.08 and 391.44

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Solution

The fourth proportional to 534.54, 802.08 and 391.44 is: 587.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.54 : 802.08 = 391.44 : x
  2. Step 2: Convert to fraction form
    534.54/802.08 = 391.44/x
  3. Step 3: Cross multiply
    534.54x = 802.08 × 391.44
  4. Step 4: Simplify right side
    534.54x = 313,966.20
  5. Step 5: Solve for x
    x = 313,966.20/534.54
  6. Step 6: Final answer
    x = 587.36

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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.