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Finding the Fourth Proportional to 1,159.76, 1,739.77 and 338.01

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Solution

The fourth proportional to 1,159.76, 1,739.77 and 338.01 is: 507.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159.76 : 1,739.77 = 338.01 : x
  2. Step 2: Convert to fraction form
    1,159.76/1,739.77 = 338.01/x
  3. Step 3: Cross multiply
    1,159.76x = 1,739.77 × 338.01
  4. Step 4: Simplify right side
    1,159.76x = 588,058.81
  5. Step 5: Solve for x
    x = 588,058.81/1,159.76
  6. Step 6: Final answer
    x = 507.05

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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.