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Finding the Fourth Proportional to 534.87, 802.08 and 210.15

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Solution

The fourth proportional to 534.87, 802.08 and 210.15 is: 315.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.87 : 802.08 = 210.15 : x
  2. Step 2: Convert to fraction form
    534.87/802.08 = 210.15/x
  3. Step 3: Cross multiply
    534.87x = 802.08 × 210.15
  4. Step 4: Simplify right side
    534.87x = 168,557.11
  5. Step 5: Solve for x
    x = 168,557.11/534.87
  6. Step 6: Final answer
    x = 315.14

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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.