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Finding the Fourth Proportional to 1,105.98, 1,526.33 and 608.68

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Solution

The fourth proportional to 1,105.98, 1,526.33 and 608.68 is: 840.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105.98 : 1,526.33 = 608.68 : x
  2. Step 2: Convert to fraction form
    1,105.98/1,526.33 = 608.68/x
  3. Step 3: Cross multiply
    1,105.98x = 1,526.33 × 608.68
  4. Step 4: Simplify right side
    1,105.98x = 929,035.87
  5. Step 5: Solve for x
    x = 929,035.87/1,105.98
  6. Step 6: Final answer
    x = 840.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.