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Finding the Fourth Proportional to 1,688.34, 2,532.94 and 908.01

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Solution

The fourth proportional to 1,688.34, 2,532.94 and 908.01 is: 1,362.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.34 : 2,532.94 = 908.01 : x
  2. Step 2: Convert to fraction form
    1,688.34/2,532.94 = 908.01/x
  3. Step 3: Cross multiply
    1,688.34x = 2,532.94 × 908.01
  4. Step 4: Simplify right side
    1,688.34x = 2,299,932.58
  5. Step 5: Solve for x
    x = 2,299,932.58/1,688.34
  6. Step 6: Final answer
    x = 1,362.24

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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.