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Finding the Fourth Proportional to 1,158.77, 1,735.05 and 609.80

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Solution

The fourth proportional to 1,158.77, 1,735.05 and 609.80 is: 913.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158.77 : 1,735.05 = 609.80 : x
  2. Step 2: Convert to fraction form
    1,158.77/1,735.05 = 609.80/x
  3. Step 3: Cross multiply
    1,158.77x = 1,735.05 × 609.80
  4. Step 4: Simplify right side
    1,158.77x = 1,058,027.10
  5. Step 5: Solve for x
    x = 1,058,027.10/1,158.77
  6. Step 6: Final answer
    x = 913.06

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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.